Sea & Learn – Saba trip 2025

This trip was really special for me this year. The quality of the invited scientists and frequency of presentations and field trips, under water and above, was exceptional. Plus, a whole lot of good diving every day with the Sea Saba crew rounded out the experience. The trip was a bit over-shadowed by not having my great friend Barry along. Barry went along with me on most of these trips for the last 12 years, but he passed away this year. Being a nationally acclaimed brewer himself, Barry would have especially enjoyed the exceptional beer from the new Deep Dive brewery. I certainly did!

Here’s a short review of the presentations and science I participated in.

Dr. Pieter Johnson is a disease ecologist who aims to understand the pervasive yet cryptic role of parasites in pathogens in ecological systems. In the photos above, Dr. Johnson provides an overview of the parasite problem, then leads us in a survey on the reef to count surgeon fish with the black spots that indicate presence of the parasite.

Kerri Dobson is a marine biologist with expertise in coral reef ecology and conservation. Her presentation explained how different types of algae may encourage of discourage the growth of coral polyps. The next day, Ms. Dobson lead us on a survey of algae types on the reef.

Joe Oliver is the Director of Restoration Operations at Coral Vita, a pioneering organization dedicated to revitalizing the world’s coral reefs. Joe lead us in relocation of invertebrates from the new harbor site to another reef. In a previous dive, they relocated many corals to the protected reef. While many divers focused on the queen conchs, I choose to gather up a bunch of hermit crabs and one arrow crab. These small crabs, being a bit more delicate, Joe personally placed on the protected reef. I was surprised the arrow crab made it alive, but it did!

D. Jean Lodge identifies and studies the roles of mushrooms in wet tropical forests of the Caribbean Basin. We learned how mushrooms and other fungus have so many benefits.

Tim Cernak is an Associate Professor of Medicinal Chemistry at the University of Michigan exploring the role of chemistry in conservation. Tim explains how his background in cancer research is applied to conservation efforts.
One of the major Sea & Learn events was the pre-release screening of David Attenbourough’s latest movie. A great dinner was provided and the school drama club provided a wonderful little dance number before the show. Even after attending Sea & Learn for 21 years, I am still overwhelmed by the amazing content the foundation delivers every year.
Here, we are perched half way up a mountain with biologist Michiel Boeken tagging a red billed tropic bird. Fun climb and learning experience!
Joe Wunderle provided a great presentation on Caribbean Birds and Hurricanes: Responses, Resilience, and Conservation. As an Emeritus Research Wildlife Biologist with the USDA Forest Service’s International Institute of Tropical Forestry (IITF) in Puerto Rico, Joe has more than 40 years of experience teaching and conducting research throughout the Caribbean.

And then there was the diving! The thing I love most about diving on Saba is the diversity of the dive sites. Saba has geologic reefs on the leeward side, biologic reefs on the windward side, sea mounts (The Pinnacles), patch and loaf reefs, turtle grass flats, and walls. This means a wide variety of fish and sea life. Here’s some photos taken during my trip from my long time Saba friends Beth and Tom:

One exceptional experience this trip was the sighting of multiple slender file fish on the Tent Deep site. Before this trip, I had only seen two of them my whole life. On Tent Deep I saw six!

Slender file fish – About two inches long full grown and highly camouflaged to hide in sea fans. Very hard to spot!

Lost two days of diving due to tropical storm Jerry, but that just allowed some quality “island time”. Some of which was spent at the Dive Bar 🙂

The Dive Bar next to Julianna’s Resort features excellent draft beer from Deep Dive Brewery.

Special thanks go out to Lynn, John, Emily, Andrea, and the rest of the team for their outstanding work at Sea & Learn. Thanks again for the wonderful dinner at Lynn and John’s house!

Wish I could have stayed for more than two weeks. I know of nothing else like Sea & Learn anywhere in the world. Where else can an average guy get to attend interesting presentations, citizen science activities above and below the water, and generally hanging out with world class scientists and naturalists. And all for free! Learn more about Saba, the excellent diving, and Sea & Learn at the links below.

Saba Tourist Bureau

Sea & Learn Foundation

Sea Saba

Deep Dive Brewing Co.

Juliana’s Resort

Sea & Learn Trip

In early October 2024 I made my annual trip to the island of Saba to scuba dive and participate in the Sea & Learn event. The diving was great, I did 36 dives in two weeks. Sea & Learn was as good as ever with many great presenters and field projects.

When ever I mention Saba to anybody their typical response is “Where’s that?”. Saba is a small island in the middle of the Caribbean just 30 miles south of St. Maartin. Not many have heard of Saba since there are no real beaches and not on the list of well known tourist destinations. Saba is a little hard to get to, accessible only by one or two occasional ferries and a single airline that must land on the shortest commercial runway in the world. The pilots must have special qualifications to even land on Saba. But, once you do go there, you’ll be back as the island is truly special. The diving is world class and the natural environment is spectacular. This tiny five square mile island has a 3000 foot inactive volcano mount comprising seven unique environments from tropical seashore up to elfin forest with miles of really cool trails!

The diving is unique due to the surrounding volcanic formations. The reefs on the leeward side (west) grow on top of ancient lava flows while the reefs on the windward side are biologic, growing on top of ancient coral skeletons. The sea mounts a little off shore offer divers quite another experience. There are several of these around Saba and they call them The Pinnacles. The top of most of the pinnacles are at about 80 feet and go down to around 200 to 300 feet. The pinnacle named The Needle is a whole other adventure. These three distinct types of reef; geologic, biologic, and offshore pinnacles; offer a vast variety of sea life and terrain to explore.

The Sea & Learn event on Saba is every year for the whole month of October. Experts in fields that pertain to Saba, our oceans, and the environment are invited to do marine and terrestrial field projects (think citizen science) and give presentations. I like to do the marine field projects. We go out on the dive boat and help the scientist do experiments or gather data. I’ve helped count dusky damselfish, surveyed queen chunk, observed sponges breathing, and countless others. The presentations are in the evening at one of the many great restaurants. You grab a beverage and get up close and personal with the presenters. I’ve learned about all sorts of sea life, land life, geology, volcanism, climate, all sorts of things. I go every year. I know of nothing else like Sea & Learn anywhere in the world. Oh, by the way, it’s free!

It’s a small island, so the scientists are in the same resorts as guests and you run in to them in the restaurants and stores. I’ve had many great conversations over breakfast, dinner, or beers. Where else would you get to chat with the director of the World Whale Shark Institute in Madagascar or Paul Human the fish ID guru?

Having breakfast with Paul Human, renowned figure in the diving industry as the co-founder of New World Publications and the Reef Environmental Education Foundation.

The wonderful woman that started Sea & Learn, Lynn Costenaro, was inducted into the Women’s Divers Wall of Fame for her efforts. From Faces of Saba: “Lynn Costenaro is a passionate environmental advocate who has made a significant impact on the island of Saba though her work with the Sea and Learn Foundation. With a deep love for the island’s unique ecosystem and cultural heritage, Lynn strives to educate and inspire both the local community and tourists about the importance of preserving Saba’s natural beauty and ensuring that the beauty is preserved for future generations”. Check it out at:

https://www.facebook.com/share/r/17st3jxwuW

Hope to see you there!

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