coral survey – NOAA Teacher at Sea Blog

March 18, 2015March 12, 2021

Sarah Raskin: Teacher at Sea Day 6, March 18, 2015

NOAA Teacher at Sea

Sarah Raskin

Aboard NOAA Ship Bell M. Shimada

March 13-18, 2015

Mission: Channel Islands Deep-Sea Coral Study

Geographic Area: Channel Islands, California

Date: March 18, 2015

Day 6: 3/18/15

7th and 8th grade students from Haydock Academy of Arts and Sciences in Oxnard, California, along with elementary students from South Carolina, decorated Styrofoam cups that Peter and I took with us on the Shimada. We brought these cups to show our students the amazing power of underwater pressure. The depths at which the ROV and CTD Niskin Rosette traveled during the voyage were much further than a human body could physically handle without being in some sort of pressurized submersible. Human bodies currently experience air pressure when we are at sea level, though we don’t feel the pressure because the fluids in our bodies are pressing outwards with the equal amount of force. However, once you start traveling underwater, the greater the pressure of the water pushing down on your being. As one NOAA website states: “For every 33 feet (10.06 meters) you go down, the pressure increases by 14.5 psi. In the deepest ocean, the pressure is equivalent to the weight of an elephant balanced on a postage stamp, or the equivalent of one person trying to support 50 jumbo jets!” (http://oceanservice.noaa.gov/facts/pressure.html)

cups on CTD rosette — Peter and I with the students’ cups tied to the CTD Niskin Rosette

To illustrate how powerful the water pressure is in the deep ocean, Peter and I used Styrofoam cups to demonstrate this concept. First, we stuffed paper towels into the cups so that they would retain their shapes during a dive down to the bottom of the ocean floor. Next, we attached the cups to the CTD Niskin rosette. The crew launched the CTD into the ocean and it plunged downwards to a depth of 550 meters. As the cups descended deeper and deeper, the increasing water pressure compressed the air out from between the Styrofoam beads that make up the cup. What was left was a significantly shrunken version of our cups. Here are the before and after pictures:

cups before dive — The cups before the dive

More cups post-dive — The cups post-dive

The CTD Niskin rosette also collected data as it traveled downwards. Water filtered through the machine and sensors gathered information about temperature, salinity, chlorophyll, and dissolved oxygen levels. The tubes on the CTD could also be programmed to collect water samples at certain depths, which they did on the return trip to the surface. This allowed the scientists to collect the water to test for different water quality factors at a later date.

rosette and cups ready to go — The cups and CTD Niskin Rosette prepare to go overboard

reviewing the data — Peter and ST Gunter review the data that is being uploaded from CTD Niskin Rosette during its dive.

Media Day

Today, the scientists and Shimada team were joined by media crews from the LA times and the Santa Barbara Independent, along with some of NOAA’s education outreach specialists. The reporters took a tour around the Shimada and they interviewed the scientists about their important work. From Peter Etnoyer, and his team’s work on Lophelia and ocean acidification, Branwen Williams’ research on deep-sea coral, Laura Kracker and team’s mapping of uncharted Sanctuary regions, to the MARE team’s innovative ROV technology, the media had quite a bit to report about!

The reporters were even able to watch the ROV take its final dive of the trip to collect one last acanthogoria sample. One of Branwen’s and Peter’s goals is to be able to determine the ages of these beautiful organisms through the work they do. If they are able to create baseline data for how old an acanthogoria is, based on size and height, then there will be less of a need to collect these specimens in the future. Instead, they will be able to determine age based on looking at the footage during an ROV dive and using the laser measurements on the ROV camera to decide how old the coral is.

Chris Caldow, NOAA research coordinator and organizer of our expedition, speaks with the media.

media watching dive — The media crew watches the ROV’s final dive of the trip

Acanthagoria sample — Gathering around the Acanthogoria sample

Until next time….

My journey on the Shimada finally came to a close today. NOAA sent out their local research vessel, the Shearwater, to meet us in the waters off Santa Cruz Island. Many of the scientists, along with the MARE team and myself boarded the Shearwater and watched as the Shimada became smaller and smaller in the distance. It was very sad to say goodbye, but Chris Caldow and the sonar team will continue on the Shimada with their important mapping of the Sanctuary for the next several days.

Shearwater approach — The *Shearwater* makes its approach to bring us back to shore

Our Backyard

Being able to explore the seldom-visited parts of our sanctuary with the scientists and NOAA crew was a once in a lifetime experience. The research these scientists are doing to uncover the hidden depths of the sanctuary is also helping to illustrate how our actions on land have a direct impact on our oceans.

When we learn more about these rarely seen regions of our Sanctuary and about the deep-sea organisms that make their home there, these places and creatures become something that we grow to love and care about. This exploratory research is so important, because as someone on the trip said; “we cannot protect what we don’t know is there.” This is especially relevant for myself and the students from Haydock, because the Channel Islands truly are our backyard; we can see the Islands and Sanctuary from the shores of our city of Oxnard. When we feel a greater connection to a place such as the Channel Islands National Marine Sanctuary, we are more likely to take part in the stewardship and protection of it for our future generations.

“Treat the earth well: it was not given to you by your parents, it was loaned to you by your children. We do not inherit the Earth from our Ancestors, we borrow it from our Children” (unknown)

To learn more about the Channel Islands National Marine Sanctuary, click on the following link:

http://channelislands.noaa.gov/welcome.html

To learn more about MARE and the ROVs check out their website: http://www.maregroup.org/

For more information about Peter Etnoyer’s work, click the following link:

http://oceanexplorer.noaa.gov/edu/oceanage/03etnoyer/welcome.html

For more information about Branwen Williams work, use the following link:

https://sites.google.com/site/branwenw/home

sunset in Channel Islands NMS — Sunset in the Channel Islands National Marine Sanctuary

March 13, 2015March 12, 2021

Sarah Raskin: Teacher at Sea Day 1, March 13, 2015

NOAA Teacher at Sea

Sarah Raskin

Aboard NOAA Ship Bell M. Shimada

March 13-18, 2015

Mission: Channel Islands Deep-Sea Coral Study

Geographic Area: Channel Islands, California

Date: Friday, March 13, 2015

NOAA Ship Bell M. Shimada, my home away from home for the next six days!

Science Log

Today marks my first official day aboard the Shimada as part of NOAA’s Teacher at Sea Program. NOAA stands for National Oceanic and Atmospheric Administration. My name is Sarah Raskin and I am an educator at Haydock Academy of Arts and Sciences, a public middle school in Oxnard, California. For the next week, I have the opportunity to join NOAA scientists from across the United States on a deep-sea science expedition in the Channel Islands National Marine Sanctuary. I am hoping to bring back what I learn to the students at Haydock and to paint a picture of what it is like to work on real-life science out in the field.

Scientists group photo — The scientists starting from the left: Peter Etnoyer, Rick Botman, Branwen Williams, Andrew Shuler, Erin Weller, Will Sautter, Steve Holz, Leslie Wickes, Andy Lauermann, Chris Caldow, Dirk Rosen, Mike Annis, Laura Kracker.

The location for our expedition is in the waters off of the coast of Ventura and Santa Barbara counties in Southern California. The Channel Islands National Marine Sanctuary (CINMS) covers 1,470 square miles of water surrounding Santa Barbara, Anacapa, Santa Cruz, Santa Rosa, and San Miguel Islands and is home to a large amount of diverse species. On this expedition, scientists will use an ROV (a remotely operated underwater vehicle) to examine deep-sea coral and the water chemistry around those coral beds. One of the most surprising facts for me before beginning this journey was to learn that coral grows in cold water deep-sea habitats, having only previously associated coral with warm water environments.

During this expedition, scientists will also look at how the corals are affected by ocean acidification. It will be interesting to see what their findings are: how do our actions on land affect organisms, such as coral, that live in the deep sea?

A Ventura County watershed: from the mountains to the sea.

Anacapa Island (Channel Islands National Park and Marine Sanctuary)

The scientists will collect live samples of the coral to take back to their labs for further ocean acidification testing. Throughout this trip, scientists will also use sonar to map the ocean floor. The information gathered from the sonar will help provide direction for where to send our ROV. The new images generated from the sonar could also be used to bring up-to-date sea floor maps of the Sanctuary, many of which have not been updated since they were created in the 1930s! Another feature of the sonar is to map out locations and quantities of fish populations in the area. This information is vital to sanctuaries and marine protected areas, as it contributes important information about why these areas are important to protect.

Science in the field is much different than science in a laboratory setting. There are so many factors to take into account: weather, ocean conditions, the working conditions of the equipment and many more unforeseen circumstances. The scientists and ship crew must each do their parts and work closely together as a team to make the research possible. During the first day aboard the researchers have faced quite a few challenges… Maybe because we set sail on Friday the 13^th?

The morning began with impromptu safety drills. Similar to the fire drills that we have at our school, the ship also conducts regular drills. Today we had both a fire drill and an abandon ship drill. The abandon ship drill prepares the crew for an emergency event that would require us to leave the ship immediately. It also involved donning a safety suit, a giant red neoprene wetsuit that is designed to keep you warm if you needed to jump into the ocean.

Sarah in survival suit — A picture of me in the survival suit

Later in the afternoon, the team took the ROV out for its first outing of the trip. Chris Caldow (the expedition lead) and the scientists from Marine Applied Research and Exploration (MARE) chose a spot on the ocean floor that was sandy and flat with few physical features to snag on for its initial run. The ROV, which is named the Beagle, is an amazing piece of machinery. It is designed to be able to function in depths of down to 500 meters. It is also equipped with a high definition video camera that will take footage of what is going on under the sea. If the scientists see something of interest, the Beagle ROV has a manipulator arm to collect samples. The arm feature is also used to deploy different types of sensors that will keep track of information, such as temperature, over a longer period of time.

MARE's Beagle ROV — MARE (Marine Applied Research and Exploration) Beagle ROV

The launch of the ROV was exciting. Most of the crew gathered around to watch its release, and as it made it’s way down to the sea floor, it began streaming video footage to monitors inside of the laboratories on the ship. It was pretty incredible to be able to see the bottom of the sea floor with such clarity. So far, we have spotted multiple species of rockfish and an egg case of a skate. I can’t wait to see what tomorrow will bring!

ROV footage — Watching streaming video footage from the ROV

Back to one of our challenges: the key sonar machine is currently out of order. When things break on a ship, it can be a bit tricky to fix. It’s definitely not as simple as running to the nearest hardware store to pick up a new piece of equipment. When something is not working out here, it can involve scuba diving under the ship to fix something or sailing back to the mainland if there is a real issue. So tomorrow there will be a boat coming out to meet our ship and bringing with it equipment and a trained sonar technician to hopefully solve our problems. Let’s keep our fingers crossed!

Update: Science in the Field

The Beagle ROV journeyed into the depth once more last night. This time the mission was to find deep-sea coral beds, in particular one species called Lophelia pertusa, and bubble gum coral.

The MARE team (Dirk Rosen, Andy Lauermann, Steve Holz and Rick Botman) worked with scientists Peter Etnoyer, Leslie Wickes, Andrew Shuler and Branwen Williams to locate a coral bed that they had visited previously in 2010 and 2014. Using GPS coordinates, the MARE team was able to locate the exact site of the coral bed that Peter and his team had worked with in earlier years. There were quite a few high-fives and cheers of excitement in the lab when the ROV made its way to the familiar patch of bright red bubble gum coral.

Branwen and Dirk scout the sea floor for coral beds

The team dropped a temperature gauge at that location that will take and record a temperature reading every five minutes for the next six months. After that, Peter and his team will return on a second expedition to retrieve the device. The temperature gauge is tied to a rope attached to a lead weight and a flotation device covered with bright reflective tape. Andrew explained that the reflective tape would stand out in the headlights of the ROV, making it much easier to spot when they return for it half a year later.

Andrew temperature sensor — Andrew holds up one of the temperature sensors that will be deployed with the ROV

The Beagle also retrieved its first coral sample of Lophelia pertusa, which it brought to the surface. Picking up samples from the deep in no easy feat. Andy and Dirk control the ROV from the deck with controls that look similar to something you would find on a video game consul. Sitting along side them, scientists Peter, Leslie and Branwen direct them to which coral specimens look the best for their sample. Then using either the manipulator arm or a shovel like feature on the boat, the ROV controller works quickly to scoop the organism into a basket attached to the front of the machine.

Scientists watch footage — The scientists watch live video feed from the ROV

Once the ROV safely made it back on board, the scientists worked quickly to get the coral and its little inhabitants, such as deep-sea brittle stars and crabs, into cold water tanks as fast as possible. While the coral doesn’t seem to mind the pressure difference between the deep-sea and surface, it does not handle the temperature differential as well.

Leslie removes coral for storage in the fresh water tanks

crab on coral — A deep-sea crab that hitched a ride up to the surface on the Lophelia

The team also took water samples from the water near the coral sites, which they will test later for pH. They are hoping to find out whether coral changes the composition of the water surrounding it. In order to collect the water samples, Branwen Williams (a scientist and professor from Keck Science Department at Claremont College), Leslie, and Andrew retrieved water samples using a CTD-Niskin rosette. They took water samples at the depth of the coral beds (approx. 290 meters) and then every 25 meters up from there. Once they filled bottles with the water, it was important to immediately “fix” the water samples. This means putting a poison, such as mercuric chloride into the water sample to kill off any living organisms, such as zooplankton or phytoplankton, that might be photosynthesizing or respiring and changing the pH levels of the water samples. This gives the scientists a snapshot of what the water chemistry is like at a particular place and time.

CTD Rosette — The CTD-Niskin rosette used to collect water samples

Retrieving water samples — The CTD-Niskin rosette used to collect water samples

November 19, 2009April 6, 2021

Chris Imhof, November 19, 2009

NOAA Teacher at Sea
Chris Imhof
Onboard NOAA Ship Pisces
November 7 – 19, 2009

Mission: Coral Survey
Geographic Region: Southeast U.S.
Date: November 19, 2009

Science Log

After 3 days and many hours in front of computer screens and monitors I almost forgot I was on a boat. Tonight is my last night on the Pisces, and although at times it has been rough, I have started to get used to the rocking of the ship and know every crew member by name. I ran about the ship when I have had a second, to take in things knowing I will have chance tomorrow . I will miss looking across the open sea and having opportunities to catch a glimpse of a shark fin near the side of the ship and a huge sea turtle making its way across the waves. I will miss talking to the crew and the scientists, and working with Jeannine Foucault the other Teacher at Sea. I’ll probably write another log tomorrow to sum up the experience, but its hard

to rally up for a science log when you are tired and many of have to pack to disembark at Jacksonville tomorrow morning. As for the Pisces and her crew, they will make their way back to Pascagoula for the Holidays.

November 18, 2009April 6, 2021

Chris Imhof, November 18, 2009

NOAA Teacher at Sea
Chris Imhof
Onboard NOAA Ship Pisces
November 7 – 19, 2009

Mission: Coral Survey
Geographic Region: Southeast U.S.
Date: November 18, 2009

Science Log

NOAA’s mission is to “protect, restore and manage the use of coastal and ocean resources.” The way NOAA does this is through science – a voyage like this may seem like moving from point to point and placing a really cool piece of technology in the water to see what’s on the bottom – but these are all tools that are being used to be able to carry out the tenets of protect, restore and manage.

We have visited half our sites now and have surveyed different environments in and out of Marine Protected Areas. Different environments, yet with commonalities – all the sites are near exposed “hard-bottom” or exposed limestone on the shelf bottom. There may be miles of sand waves and algae – but theses exposed, complex and bio-encrusted features are “oasis’s” for all sorts of ocean life – especially fish. As the ROV maneuvers across the sandy waves, it is usually the glint of a school of fish or reflection of a fish eye that provides a beacon to a feature. If these features are “oasis” habitats then they should be protected. Granted, these limestone blocks can do more damage to fishing line and gear, evident in the amount of line found in the high relief areas – but in the case of some of the North Florida MPA, we encountered the fragile deep water Occulina Coral which is vulnerable especially when nets are being dragged across these areas.

Another commonality noticed is the growing presence of the beautiful Lion Fish (Pterois volitans) – this native of Pacific waters was released intentionally or unintentionally in the early 1990’s around Florida and have since spread to areas above North Carolina and south to the Caribbean, especially along reefs and rocky outcrops. They join an infamous ranks of other invasive species including the European Green Crab, Asian Eel and Zebra Mussel. The Lion-Fish, besides having an array of venomous spines. has a keen strategy of “corralling” prey with their fins and eating them in one gulp. This will impact the small fish and crustaceans in these habitats as well as the added competition with indigenous or native predators such as snappers and grouper fish – which are currently commercially fished. This is where “manage” comes in – here is a “new” invasive species in that is growing in population and spreading geographically, impacting the habitat by out-competing, in some cases, the established predators – how can it be managed.

Especially when the Lion-fish has few natural enemies. The Lion Fish is a tricky one – as an invasive species, missions like this one help to understand the long-term impact the Lion-Fish is having on these habitats. Using technology like multi-beam mapping and ROV technology can provide data for scientists and in turn give councils, commissions and government the knowledge to manage these areas through smart-solution-based policy.

References:

coastalscience.noaa.gov/documents/factsheet_lionfish.pdf

http://www.magazine.noaa.gov/stories/mag135.htm

November 17, 2009April 6, 2021

Chris Imhof, November 17, 2009

NOAA Teacher at Sea
Chris Imhof
Onboard NOAA Ship Pisces
November 7 – 19, 2009

Mission: Coral Survey
Geographic Region: Southeast U.S.
Date: November 17, 2009

Science Log

We sailed last night to our first “station” – The North Florida Marine Protected Area – and by 7:00 am this morning the ROV pilots Lance Brown and Glenn Taylor were going through the “pre-flight” checklist on the ROV; Lance working the controls in the lab, Glenn outside taking care of the deployment and extraction of the vehicle on the starboard weather deck. Soon they were meeting with the Lead NOAA scientist Andy David to talk through the operations of the deployment and extraction and more specifically the methodology of what they were trying to accomplish at this site.

The North Florida MPA area has been protected since 2004 – meaning no sailing or fishing occurs in this area. Some of the area has been mapped by multi-beam sonar – so what scientist then do with ROV technology is “Ground-Truthing” in which after examining the multi-beam maps – choose features to explore and check visually how they compare with their maps. Since the ROV sends real time video feed to the lab, the scientist watch and note the features, the animals that are present or not present in the habitat. They also perform a down shot every 2 minutes, or stop the ROV – point the camera down and take a picture – later in the lab they quantify the habitat by gridding the photograph and counting the number of species. Todays North Florida site tested sites inside the Marine Protected Area as well as sites/features outside the MPA for comparison as well as to help make future decisions of extending possible areas into the protective zone or even species.

After the scientists met, the Pisces crew and captain Jeremy Adams met on the weather deck to talk through the operation – sync their communications and what if scenarios. In all, there were 3 ROV dives which went extremely smooth, mainly due to the organization and communication of everyone involved.

The highlights of the dive were the spectacular features of the exposed limestone near the drop offs and the amazing habitats – for all my preparation the diversity of fish was overwhelming – I could identify a few featured fish like the Lionfish, barracudas and Moray Eels – I was unprepared to see a real sea turtle hanging out by some rocks or a Goliath Grouper which came out of nowhere. I learned many new fish which I hope to be able to call out from the monitor tomorrow like the Reef Butterfly, Squirrel Fish, Amberjack, Scamp, Soldier fish, Purple and Yellow Tail Reef Fish. I was helpful in identifying some of the Occulina deep coral species, the sponges (which you couldn’t miss) as well as pick out old fish line, a bottle and and an old anchor jammed into the rocks near the edge.

I’ll let the pictures and video slices tell most of the story. We are cruising all night again to our most northern site Edisto – off South Carolina and then work back from there.