Skip to main content
Croatia

Protecting the
Adriatic's Giants

Off the coast of Lošinj Island, students work alongside marine biologists to study dolphins, sea turtles, and the health of the Adriatic Sea.

Where Dolphins Surface and Data Drives Policy

A bottlenose dolphin surfaces fifty meters off the research vessel, exhales, and dives. Its dorsal fin (nicked, scarred, unique) has appeared in the Blue World Institute's photo-ID dataset for over twenty years. The SFS Center for Conservation of Marine Megafauna sits on Lošinj Island in the northern Adriatic, where cargo ships, trawlers, and tourist ferries crisscross waters that still harbor resident dolphins, foraging loggerhead sea turtles, and the seagrass meadows anchoring entire food webs.

Students work alongside the Blue World Institute (the only nonprofit dedicated to marine megafauna research in the Croatian Adriatic) conducting boat-based photo-identification surveys, deploying hydrophones to measure underwater noise, and examining live turtles and assisting at necropsies in the sea turtle rescue center. Field trips reach Susak Island to assess nesting-beach suitability under climate change, Brijuni National Park for marine conservation management, and the griffon vulture rescue center at Beli on Cres Island, where the last roughly one hundred families cling to the cliffs.

A cloud-streaked sky glows over the calm Adriatic at dusk off Lošinj Island
2024
Year Established
200+
Dolphins Cataloged
1,200+
Islands in the Adriatic
1
Marine Protected Area

Marine Megafauna Conservation

Research produces conservation outcomes: from dolphin abundance estimates using closed-population models to seasonal maps of high-risk zones between juvenile loggerheads and industrial fisheries. Students quantify epibiont loading on rehabilitated turtles, map trawler activity shaping dolphin habitat, and deploy acoustic equipment to measure how shipping noise affects cetacean behavior. Data feeds directly into EU Natura 2000 site designations.

Explore Our Research
A loggerhead sea turtle swims at the surface of jade-green water
Students gently cradling a sea turtle during a hands-on marine biology lesson

Hands-On Field Methods

  • Dolphin Photo-ID

    Photograph dorsal fins on boat surveys and match individuals to the Blue World photo-ID catalog
  • Cetacean Boat Surveys

    Plan and run vessel-based surveys, logging dolphin sightings, behavior, and abundance data across the archipelago
  • Bioacoustic Monitoring

    Deploy and recover hydrophones, then analyze recordings and spectrograms to separate dolphin calls from vessel noise
  • Theodolite Tracking

    Track dolphin movements from shore stations using land-based theodolite surveys
  • Sea Turtle Veterinary Care

    Examine and help treat rescued loggerheads, from blood work and ultrasound to wound care and laser therapy
  • Necropsy & Sampling

    Assist at postmortem examinations and collect standardized samples that reveal diet, disease, and ingested plastic
  • Drone & Satellite Tracking

    Fly drone surveys of sea turtles at the surface and follow satellite-tagged loggerheads across the Adriatic
  • Microplastics Analysis

    Collect and quantify microplastic contamination in sediment, water, and biological samples

Faculty in Croatia

Spring 2026

Diet Composition and Marine Litter Ingestion of Loggerhead Sea Turtles (Caretta caretta) in the Northern Adriatic Sea

Worked through the gut contents of northern Adriatic loggerheads to build a picture of what these turtles eat, and how much plastic and other marine litter they swallow along with their food.

Spring 2026

Dolphin-Watching as a Potential Tool for Social Network Description of the Cres-Lošinj Bottlenose Dolphin Population

Tour boats are on the water far more often than research vessels. Students mined their photo IDs for who swims with whom, then tested the result against the center's own surveys.

Fall 2025

Behavioral Effects of Satellite Tag Attachment on Neonate Loggerhead Sea Turtles

Miniature tags could follow hatchlings through the years when loggerheads simply disappear from view, but only if the tag changes nothing. Students tested whether it does.

Fall 2025

Trawler Activity and Bathymetry Shape Habitat Use and Behavior of Bottlenose Dolphins in the Cres-Lošinj Archipelago

Dolphins follow trawlers for an easy meal, and they also favor certain depths. Students worked the archipelago's sightings to separate the pull of the nets from the shape of the seabed.

Community & Culture

Students live in a former hotel with ten rooms of two to four, en-suite bathrooms with hot water, and shared closets. Days run roughly 7 AM to 7 PM, alternating between shore-based seminars and boat-based fieldwork: twenty hours of dolphin photo-ID surveys over five weeks, drone flights for turtle abundance, and sea turtle rehabilitation at the rescue center.

SFS students become part of Veli Lošinj's island community, eating at harborside restaurants, learning Mediterranean maritime culture from local fishers, and collaborating with Blue World Institute researchers on the only marine megafauna research program in the Croatian Adriatic. Data feeds directly into EU Natura 2000 marine protected area designations.

Smiling students enjoying a sunny boat ride along the Croatian coast

Ready to Study in Croatia?

Enrolling now for Spring 2027, Summer 2027, and Fall 2027.

Apply Now