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.

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