TheÂ Australian Associated PressÂ reports on the case of Sam Kanizay, a Melbourne 16-year-old who spent about a half-hour soaking his legs, sore from sports, at Dendy Street Beach in Brighton on Saturday.
He emerged with hisÂ legs dripping in blood.
â€œAs soon as we wiped [his legs] down, they kept bleeding,â€ Samâ€™s father, Jarrod Kanizay, said. â€œThey ate through Samâ€™s skin and made it bleed profusely.â€
And they left doctors stumped. But there have been theories aplenty, according toÂ The New York TimesÂ and theÂ Associated Press: Some were sure that sea lice, a group of crustaceans known as isopods, were responsible.
The head of the Dolphin Research Institute points the finger at another group of crustaceans called amphipods; another marine expert speculates it was jellyfish larvae.
As for Thomas Cribb, a parasite expert at the University of Queensland, â€œItâ€™s not a parasite Iâ€™ve ever come across.â€