New eDNA method detects Hammerhead sharks in shallow waters

New eDNA method detects hammerhead sharks in shallow waters (Image: Canva)

Marine scientists have discovered a new way to locate some rare sharks. By analysing traces of DNA in seawater, researchers can detect species. The method focuses on critically endangered 'hammerhead sharks' in coastal zones. It promises to improve conservation efforts and protect fragile populations.

Hidden Sharks Revealed in Coastal Waters

Scientists have identified rare hammerhead sharks without catching them directly. The method relies on environmental DNA from seawater samples carefully. It targets critically endangered species in shallow coastal habitats. The discovery offers hope for safeguarding these sharks from extinction.

Secrets of the Deep

Researchers collected water samples along coasts from Mexico to Peru. They looked for scalloped bonnethead, scoop head and Pacific bonnethead sharks. Laboratory tests confirmed the presence of these elusive species efficiently. Populations were discovered in regions previously thought to be empty.

Conserving the Forgotten

Traditional surveys often fail because these sharks are small and scarce. Overfishing has caused dramatic declines in coastal hammerhead populations worldwide. Detecting DNA traces identifies critical refuge zones for urgent protection. The method provides essential data for guiding conservation strategies effectively.

Coastal Refuges

Colombia’s Uramba Bahía Málaga National Natural Park emerged as a hotspot. These areas may shelter small populations of rare hammerhead sharks. Protection can focus on zones where fragile populations still survive. The research highlights biodiversity hidden from conventional observation techniques.

Science Beyond Sight

The eDNA approach can detect multiple marine species simultaneously. Samples can be archived and analysed later for future research. Non-invasive monitoring reduces risks to sensitive populations and fragile habitats. It also emphasises the evolutionary importance of species at risk.