Hacker News with Generative AI: Sharks

LED lights on underside of surfboards may deter great white shark attacks (theguardian.com)
Using LED lighting on the underside of surfboards or kayaks could deter great white shark attacks, new research suggests.
Cocaine found in muscle/liver of sharpnose sharks off coast of Rio de Janeiro (phys.org)
Sharks test positive for cocaine in waters off Brazilian coast (thetimes.com)