Australia could probably add one more entry to the list of animals that want to kill us, if we could just agree on what chewed up the ankles of a Melbourne teen over the weekend.

16-year old Sam Kanizay just wanted to cool off his sore legs after a football match on Saturday, so he waded in the water off Brighton's Dendy Street Beach.  But the cold water numbed hiis legs and he didn't really feel what was going on beneath the surface of the water.

When he got out, his ankles were a bloody mess, as evidenced by these gross photos that raced around social media.  Doctors and scientists baffled not only by the severity of the injury, but by what could have caused it.  Many people guessed Sea Lice, although they haven't been known to cause this kind of injury.

On Sunday night, Sam's father Jarrod Kanizay did a little investigating at the beach.  He dropped chunks of raw meat near the spot where Sam was attacked and rolled video as nasty little creatures voraciously gobbled it up.  But researchers are not fully convinced these hideous little monsters arethe culprits. 

"You can attract a lot of animals in the sea with raw meat," said University of New South Wales associate professor Alistair Poore.  "Even though it's interesting, it doesn’t prove to me they were the ones that bit his legs.

Dr. Poore said the creatures in the video weren't sea lice, but another group of small scavengers called amphipods.  Another researcher said he had an experience similar to Sam's. 

"It was very cold, probably, about this time of year, and when I got out of the water I realised my forehead was bleeding and parts of my cheeks were bleeding," said Jeff Weir, the executive director of the Dolphin Research Institute.  "They'd crawled in under my wetsuit hood and into my beard and chewed away, very similar to what happened to this young lad."