Tag Archives: aquaculture

Alumni On Campus: Hannah Druckenmiller

Hannah Druckenmiller (F07) is back on Eleuthera, this time as an intern at CEI. She joins the aquaculture team this summer in between semesters at The Leland Stanford Junior University, where she is a rising sophomore. There she studies earthsystems, which is an interdisciplinary major encompassing environmental science, economics and politics. Following her semester at The Island School, Hannah knew she wanted to return, and decided on an aquaculture internship after hearing a lecture on the subject.

This is not her first trip back since she was a student, as she was on island for the 10-year reunion. The difference this time is that she’s getting her hands dirty. She’s also gotten close to some sharks since she’s been back, including watching a lemon shark rip a carcass off of a bait cage and spotting a hammerhead.

Her work here gives her a new appreciation for the Cape, and she’s enjoying being down here with the freedom to explore more than she could as a student. In the work she does, she’s also been given quite a bit of freedom to figure things out independently, “I didn’t know the first thing about oxygen generation equipment, but now I’m making recommendations on which systems to buy,” remarked Hannah.

When Hannah leaves in August, she’ll be headed back to California. She is looking forward to a 3-week camping trip to learn about the natural history of Monterey, before going back to class.

Fish Silage: Turning Fish into Fertilizer

Island School students, Aldis, Brett, and Sara are doing a human ecology project that utilizes the cobia harvesting waste into livestock feed and fertilizer, trying to further close the loop in our sustainable model here at CEI/IS.  The fish silage will be used to feed the pigs and tilapia, as well as a fertilizer at the farm. Continue reading

It is official, Gobies clean brood stock cobia!

What an exciting Monday morning for aquaculture! We now have 3 goby breeding pairs that have all laid eggs this week. Our most recent pair needed to be separated from the two other resident gobies, so we decided to experiment. It has been relayed by word of mouth that gobies will clean parasites off the cobia. Nothing is ever that easy at CEI, so we needed to see it to believe it.

Nine thirty this morning, Marie and I decided to take the leap of faith and place the 2 gobies into the brood stock cobia tank. No one knew what to expect. Would the gobies like their new home? Would the cobia know to stay still so the gobies could clean them? How long would it take until we would observe the gobies actually cleaning the cobia?

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Congratulations…it’s a cobia!

Augie and Lea checking out the gobies

by: Team Acult Research- Augie Cummings and Lea Luniewicz

Gian Paul happily transfers baby cobia


Although we were down 3 scientist, Lea and Augie continued the research on the almighty sharknose goby. Earlier in the week we were on track to dive the cage, but despite Tyler’s heroic effort to save the day, we were without a boat. We recently received a small batch of 400,000  cobia eggs and spent all of Friday’s class separating out 8,500 cobia into a different tank.

The gobies are living it up in the pairing tank while some of those sly sharknoses have found their mates, and have moved on to better, more private real estate. They all seem to be getting to know each other better and some on more levels than others. All the color of the gobies have seemingly returned so physically they are looking pretty too. We believe that the guys indoors have been doing better because of the much more pleasurable environment. Until next time, stay classy South Eleuthera!

Harvesting Cobia with the Aquaculture Research Team

Eliza shows off her filleting skills

Today we strayed from our usual “water parameter, goby feeding” routine and went diving into the offshore cage. We loaded nets, bags, and scuba gear into Red Rising. Sitting on the bow of the boat, we looked at the aquaculture cage 50 feet down in the water. Snappers, grouper, cobia, and even two bull sharks circled the cage. Then, we began our decent. As we approached Continue reading