Blue Project Stories
The Invisible Giant: Tracking Sawfish via eDNA

Searching for the Shadows of Andros

The Atlantis Blue Project Foundation (ABPF) is dedicated to the protection of the ocean’s most misunderstood and endangered residents. Our mission frequently takes us into the remote corners of The Bahamas to find the smalltooth sawfish, a prehistoric ray that has nearly vanished from the wild. By funding specialized expeditions, we ensure that the best technology is deployed to save this iconic species.

The Work: Data in the Water

Through our ongoing work with our sponsored partners at Saving the Blue, we recently completed a multi-day survey across Andros Island. Because sawfish are notoriously shy, we utilized environmental DNA (eDNA) sampling. This is a cutting-edge method that detects genetic traces left behind in the water. It also allows ABPF-funded researchers to confirm the presence of sawfish even when they remain out of sight.

While the primary mission focused on the sawfish, our team also monitored the health of other apex predators. During a recent session, our experts successfully tagged a large Great Hammerhead and a Tiger Shark, providing a decade’s worth of tracking data.

The Saving the Blue team conducts a hammerhead workup (photography by Gabby Lozada).

Key Takeaways: High-Tech Discovery

  • Genetic Mapping: Collected 49 eDNA water samples to identify hidden sawfish habitats across southwestern Andros.

  • Remote Monitoring: Deployed 25 BRUV units (Baited Remote Underwater Video) to record underwater behavior in crystal-clear visibility.

  • Apex Insights: Successfully tagged 33 sharks, including two with advanced satellite trackers to monitor long-term migration.

  • Expanding Reach: Surveyed new locations like Miller Creek and Mangrove Cay to delineate critical habitat for the species.

Saving the Blue’s team carries our a nighttime sharpnose workup.

A Legacy of Protection

ABPF remains committed to providing the resources and sponsorship necessary to turn scientific data into real-world protection. We look forward to the lab results of our eDNA samples to further our quest in safeguarding the smalltooth sawfish.


FAQ

What is a smalltooth sawfish? The smalltooth sawfish is a critically endangered ray known for its saw-like snout, found in shallow coastal and estuarine waters.

How does eDNA help in ocean conservation? Environmental DNA (eDNA) allows scientists to detect rare or elusive species by analyzing genetic material found in water samples without needing to see the animal.

What is the role of the Atlantis Blue Project Foundation? ABPF funds and supports marine research, community outreach, and conservation projects to preserve the marine biodiversity of The Bahamas.

Are sawfish dangerous to humans? No, sawfish are generally shy and docile animals that use their "saws" primarily for hunting fish and defending themselves from large predators.