Ready for an adventure with a purpose? Request info »
  • Search SEA Semester, Summer and High School Programs

Current position of the SSV Corwith Cramer. Click on the vessel to view position history. Use the layer tools, top right, to change the map style or to view data layers. Dates and times use GMT (Greenwich Mean Time).

SEA Currents: SSV Corwith Cramer

July 29, 2014

Fish Sampling

Camrin Braun | Tane Sinclair-Taylor, PhD Student, MIT/WHOI Joint Program in Oceanography | Reef Ecology Field Technician,King Abdullah University of Science and Tech

Camrin Braun cradles a whitetip reef shark before its release. Photo by Tane Sinclair-Taylor.

Ship's Log

1° 51.9’ S x 174° 50.1’ W

28 days and 3 island sites into our Phoenix Islands Expedition finds the Woods Hole Oceanographic Institution (WHOI) fish team with 278 fish sampled, including 57 blacktip and grey reef sharks and 4 manta rays. The rest of the Seamans’ crew has taken to calling the WHOI fish team “the Tweedles”, but it remains unclear who is ‘dee and who is ‘dumb. Despite the confusion about
our names, the smell of fish while visiting an island site is unmistakable and is a telltale sign of our current location.

Our typical day starts around 0430 by fishing a longline from the stern of the Seamans. As the day begins to break, we haul our hooks in and take to the skiff for some fishing closer to the reef. We spend the next several hours maintaining longlines for sharks and spearfishing for our reef fish samples. In-water sampling part 1 ends around 1300, and the real work begins. We extract fish ear bones and collect muscle and tissue samples from the morning’s samples. As the heat of midday gives away to evening, we make a second trip on the skiff to repeat our earlier sampling and search for the inevitable hard-to-find fish species.

All this hard work and foul odor isn’t without reward, though, as we’‘ve so far managed to fulfill nearly all of our sampling goals. We are collecting these samples from a representative group of coral reef species to better understand how energy moves through a reef from its primary producers like corals up to top predators such as sharks. If we can constrain the energy sources supporting a coral reef foodweb, we can better understand reef function and resilience to change. What a great opportunity we’‘ve had thus far with more to come in the last few weeks of our trip!

We’’re now on to day 28 since watching the lights of Honolulu fade in the distance and are currently less than 5 nautical miles from Winslow Reef. We (as a ship and as a society) know very little about Winslow including what kind of land emerges from among the waves, if any. Excitement aboard the Seamans remains high as we ride some light winds and creep toward our next stop, eager to be among the few people in the world to have ever laid eyes on yet another amazing reef of the Phoenix Islands.

Camrin & Tane

Categories: Robert C. Seamans,Protecting the Phoenix Islands, • Topics: s254  research  science • (0) Comments
Previous entry: Three Days in Lisbon cont’d    Next entry: Dolphin Serenade


Leave a public comment for students and crew to read when they reach their next port and have access to the internet!



Add a comment:

Notify me of follow-­up comments?

I would like SEA to keep me informed about news and opportunities.