The Collossal squid

The colossal squid is the largest invertebrate known to man (so far). The Colossal Squid can also be called the Antarctic Squid or the  Giant Cranch Squid. It's species is found in the Southern ocean but is known to go up to South Africa.

: Most Common areas for the Colossal Squid.

 : Size compared to an average human

The Colossal Squid has sharp hooks at the end of his tentacles as well as suckers and teeth unlike the giant squid which only has teeth and suckers. The first sighting of a Colossal Squid was finding two tentacles in the belly of a Sperm whale. Scientists then used underwater cameras to find a huge eye starring at the camera. But it is now proven exist and grows up to 8 meters according to recent studies. The largest Colossal Squid caught was by new zealander fishers off the coast of Antarctica, measuring initially 10 meters but then the creatures tentacles shrunk making it still a whopping 4.2 meters due to the tentacles shrinking.

 : The specimen being caught in 2007 by the fishers off the coast of Antarctica.

Scientists don't know much about this creature due to the specimens natural instinct of staying in the abyss of the sea.

https://www.youtube.com/watch?v=neQtrQvLV9Y