Scientists discover ‘world’s largest’ seagrass forest – by strapping cameras to sharks

New study, carried out using tiger sharks in the Bahamas, extends total known global seagrass coverage by more than 40%

Tiger sharks are notoriously fierce. The huge animals, which can grow to more than 16ft, are ruthless predators and scared of absolutely nothing - recent research found that while other shark species fled coastal waters during strong storms, tiger sharks didn't even flinch".

But recently they have a new role that could help burnish their reputations: marine scientists.