Kevin McMahon: GoPro Science! July 11, 2014


NOAA Teacher at Sea

Kevin McMahon

Aboard NOAA Ship Pisces

 July 5 – July 18, 2014

Mission: Southeast Fisheries Independent Survey

Geographic area of the cruise: Atlantic Ocean, off the coast of North Carolina and South Carolina

Date: July 11, 2014

Weather Information from the Bridge

Air Temperature:           28.1 °C

Relative Humidity:         86%

Wind Speed:                 17.08 knots

 

Science and Technology Log

As mentioned earlier, we are trying to collect data about fish populations in the Atlantic Ocean, off the southeast coast of the United States. One way to do that is to catch fish in traps. But, wait. What if some of the fish don’t go in the trap?

To help get a better estimate of fish populations, scientists use technology used by skateboarders, surfers, and snowboarders – the GoPro camera.

GoPro Camera on Chevron Trap
GoPro Camera on Chevron Trap

 

There are two cameras mounted on the top of the trap. One is placed on the front of the trap. Another camera is placed on the back of the trap.

Because the video file is so large, I won’t be able to upload it to this blog. But here are some screenshots of what we see on the video.

 

GoPro Camera and Trap Heading into the Ocean
GoPro Camera and Trap Heading into the Ocean

 

This is what the camera sees as it is sinking to the bottom of the ocean.
This is what the camera sees as it is sinking to the bottom of the ocean.

 

Hello pufferfish!  This is a view of what we can see with the video camera.
Hello pufferfish! This is a view of what we can see with the video camera.

 

Sometimes the video helps explain why we do not have many fish in our trap.  In this photo, a tiger shark is swimming in front of the camera.
Sometimes the video helps explain why we do not have many fish in our trap. In this photo, a tiger shark is swimming in front of the camera.

 

So, how do you count fish on the video?  The fish can be very fast and they zoom in and out of view. The scientists use a procedure called MeanCount. They look at the video from minute 10 to minute 30. Every 30 seconds, they stop the camera and count the number of fish of each species that they are studying.  They then find the average number of those fish in this twenty-minute video segment.  This MeanCount allows them to better estimate the fish population of that species.

Spotlight on Ocean Careers

I have been fortunate to meet many interesting people while at sea. One of those people is Adria McClain, the survey technician on the Pisces. Listed below are her answers to questions that I asked about her job.

 

Adria McClain holding a spottail pinfish
Adria McClain holding a spottail pinfish

 

Tell us your name and where you grew up.

My name is Adria McClain and I was born and raised in Los Angeles, California.

 

What is your job title and could you explain what you do.

Survey Technician. I am responsible for collecting, checking, and managing the ship’s meteorological data (temperature, atmospheric pressure, relative humidity, wind speed/direction) and oceanographic data (water temperature, salinity, current speed/direction, speed of sound in water). Additionally, I am responsible for the ship’s scientific equipment (e.g. conductivity, temperature, and depth (CTD) sensor, scientific seawater system) and the ship’s scientific software. I also assist the visiting Fisheries Biologists with sorting and measuring fish.

 

What got you interested in doing this type of work?

I’ve always liked science and knew from an early age that I wanted to be a scientist. I studied Biology in college and Oceanography in graduate school – this job allows me to do work in both fields.

 

How can a student prepare to do this type of work?

Take lots of science and math classes in high school and in college. Take lots of English classes too! In the sciences, it is important to be able to communicate verbally and in writing. I would also recommend taking a basic seamanship course to learn about navigation, shipboard communication, tying knots, and safety at sea.

 

Why do you think it is important to study the ocean?

The reasons are many, but to name a few, the ocean influences Earth’s climate and weather patterns, the ocean harbors yet undiscovered species, and the ocean provides food for humans and countless other life forms.
What was your favorite subject or subjects in school, and why were they your favorite(s)?

All of them! I’ve always had a passion for learning. If I had to pick a favorite subject, it would be a tie between science and foreign languages. I liked science because I was always fascinated with the natural world and wanted to understand and be able to explain what I observed in nature. I liked foreign language study because I wanted to be able to communicate in more than one language.

 

What are your hobbies?

Reading, science, and travel.  I am also a Batman enthusiast and collect Batman comic books, movies, TV shows, as well as books about the mythology, philosophy, and psychology of Batman.

 

Tell us about what it was like when you were in 6th grade.

In my school district, elementary school included sixth grade. We stayed with the same teacher all day and the subjects we studied included social studies, math, science, reading, writing, music, and physical education.

“International Day” was one of my favorite days – once per year, each of the school’s 12 classrooms featured the food, art, and history of another country or culture. Each student received a “passport” and could choose which countries to visit that day.

What is your favorite sea creature?

The Smooth Lumpsucker (Aptocyclus ventricosus)

This cute blob is a Smooth Lumpsucker. Credit: Adria McClain
This cute blob is a Smooth Lumpsucker. Credit: Adria McClain

Adria explained to me that the Smooth Lumpsucker won’t be found on our current trip. Too bad. It looks pretty cool. She said that you can find it in much colder water, like the North Atlantic Ocean. To find out more about the Smooth Lumpsucker, you can click on this link:

Smooth lumpsucker

 

Personal Log

It has been fun and challenging living on a ship. It is VERY different from living on land.

My room is comfortable and I sleep on the top bunk.  The greatest part of all is when it is time to sleep. While you are lying down in bed, the waves will roll you gently from side to side. At the same time, the head of the bed will rise up and down too. And, if that wasn’t enough movement, we sometimes feel the ship slide left and right.

Because my room is on the bottom floor, the water from the waves will crash against the window. It makes a sloshing sound. With all the rocking and sloshing, I sometimes think that I am sleeping in a washing machine. So far, it has been a relaxing way to fall asleep.

I spend much of the day in the wet lab. Yes, you are right. It is wet in there. In the picture below, I am standing in the entrance to the wet lab.

 

This sharksucker can stick to humans too.
This sharksucker can stick to humans too.

 

This is where we collect data on the fish, like their weight and size. It is also where the scientists collect samples to help determine the age and reproductive health of certain species.

My favorite part of the wet lab is the fish waterslide. The fish that are returned to sea are dropped down a hole in the wet lab where they land on a jet stream of water and get launched back home.

Triggerfish returning to sea from the ship's  "waterside".
Triggerfish returning to sea from the ship’s “waterslide”.

We also have a dry lab. Yes, you are right again! No fish are allowed in here. This is where the scientists have their computers and where the video cameras are kept when they are not in their waterproof containers. Our chief scientist, Nate Bacheler, works on 5 computers at once when it comes time to decide where and when to drop the traps.

 

Nate Bacheler in the Dry Lab. Can you see the 5 computers that he uses?
Nate Bacheler in the Dry Lab. Can you see the 5 computers that he uses?

 

Did you know?

A team of 5 seventh graders from Sacred Heart School in South Haven, Mississippi named our ship the Pisces. They won a contest to name the ship by writing an essay and explaining why NOAA should choose the name that they selected.

 

3 Replies to “Kevin McMahon: GoPro Science! July 11, 2014”

  1. Very interesting and adventurous! Looks like you’re doing some great explorations. Can’t wait to here more.

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