
Ilili’s Shark and Ray Research and Conservation Expeditions
in Guanaja, Honduras
GUANAJA EXPEDITION
Expedition Date coming soon 2024
Join Ilili’s small team of marine biologists and fishers for a once-in-a-lifetime experience among the incredible reefs of Guanaja in the Bay Islands of Honduras. During this trip you will get hands-on experience working with the world’s most endangered group of marine vertebrates: sharks and rays. As part of the expedition, you will assist our team on activities related to their research. Activities will include longline captures for sharks, transects to photo-id eagle rays and deploying Baited Remote Underwater Videos. You will work alongside our team of experienced biologists and fishers each day during our monitoring, while experiencing the stunning underwater world of Guanaja. The week will be complemented with presentations by our research team to deepen your understanding of these iconic species and the threats they face. Your generous tax-deductible contribution will provide Ilili the opportunity to conduct research on these species in Guanaja and engage local Honduran researchers in future trips! It is thanks to donors like yourself that we can carry out this important work.


Our Research
The status of sharks throughout Central America and the Caribbean is poorly known, information on captures remains sparse, and although some regulations exist, sufficient enforcement remains a difficult task. In 2011, Honduras declared its entire Exclusive Economic Zone as a Shark Sanctuary and prohibited shark fishing and the commercialization of any derivatives. While this was a huge step forward in the conservation of sharks in the region, we still know little about sharks and their status in Honduras.
The country is home to several marine protected areas including the Bay Islands National Marine Park, the country’s largest. This area plays host to part of the Mesoamerican Barrier Reef, the largest reef system in the western hemisphere, stretching from the Bay Islands in Honduras to the tip of the Yucatan peninsula in Mexico. The reef surrounds the Bay Islands which include Guanaja – 43 miles off the north coast of Honduras, and 7.5 miles from the island of Roatan. Guanaja’s warm, clear waters support an extensive coral reef and diverse marine life.
During this research expedition we will aim to determine the role of marine protected areas in the conservation of sharks and rays. You will contribute to a long-term data set of marine protected areas including the Bay Islands of Honduras and comparing them to fished areas. Additionally, you will also contribute to the organization’s citizen science project to understand the movements and abundance of spotted eagle rays using photo-identification.

How will you help?
Training
Your objective is to assist Ilili’s team in monitoring the activities of sharks and rays in Guanaja. To prepare for your trip and help us collect the most valuable data, we will provide you with materials in advance your knowledge on sharks and rays. On your first days in Guanaja, we will hold training sessions to review the methods and fine-tune your skills.
Activities
Species identification of sharks, rays, turtles and piscivorous fish
Identifying marine megafauna by species is an important part of assessing biodiversity. Species ID will be used during in-water visual transects and in analyzing Baited Remote Underwater Video recordings.

Baited Remote Underwater Video (BRUV)
BRUVs are structures made from PVC and rebar pipe or metal that contain a GoPro camera and an extended arm with a bait cage. BRUVs are deployed at various sites around the Bay Islands for at least 90 minutes at a time to record species that are attracted to the bait. These videos are later analyzed to record the species and relative number of individuals and assess diversity and relative abundance.

Longline capture and tagging of sharks and rays
Scientific longlining is another method to assess shark and ray diversity and abundance, especially over long periods of time. This technique involves setting a line of 50 baited hooks in order to capture individuals and collect more specific measurements, tag the animal with a marker that will identify them in future captures or sightings, and collect a tissue sample for DNA and contaminant analysis. You will assist with baiting and setting the longline, collecting environmental data, and will learn proper handling techniques for safely tagging and releasing sharks and rays.

What is included?
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Lodging: double occupancy room with private bath for 7 nights at Fly Fish Guanaja
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Transfers: Transfer from West End to boat departure dock Roundtrip, Round-trip boat transport between Roatan and Guanaja.
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Meals: 3 meals daily, including arrival lunch/dinner, breakfasts, daily lunches, daily dinners accommodating dietary restrictions if needed. Meals include water, tea or coffee.
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Marine conservation donation. Your tax-deductible donation will enable us to carry out our work and support local Honduran fishers’ salaries and enable us to train up and coming Honduran biologists in future expeditions!
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Waterfall hike and community tour
What is not included?
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International air
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First night in Roatan
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Transfers between Juan Manuel Galvez International Airport and hotel in Roatan
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Travel, health, or cancellation insurance
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Alcoholic beverages
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Snorkeling gear rental
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Personal items and incidentals
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Souvenirs

