We're gonna check out footage of the biggest one ever caught and learn exactly what makes them so unique.
The colossal squid were first discovered in 1925, when a fisherman removed its head and arms from inside the stomach of a sperm whale.
Since then, only eight colossal squids have been found.
Six of which were inside whales.
All of them are females, as a male specimen has never been seen.
The most recent binding and biggest squid ever caught was in 2007, and measured at 33 feet (10.06 meters) long.
It was caught by accident, as it attacked a big toothfish, it was already hooked on a fisherman's line.
The monster squid refused to let go, as it took fisherman over 2 hours to bring it onto the boat.
This giant squid is presently on display at a National museum in New zealand.
So, what makes this creature so unique?
It's the largest known invertebrate in the world, as scientists estimate these squids to grow up to 46 feet (14.02 meters) in length.
They have three hearts, bleed blue blood, now the largest eyes of any creature in the world.
This deep sea monster has eight different sized arms and two tentacles like most squid.
However, they are the only species with rotating hooks which are used to grab and hold on to their prey.
All squid had an ink sack which is used to squirt into the water, producing a dark cloud to help them from escaping predators.
In the case of the colossal squid, no one has ever seen what it's ink look like.
So, we can't be sure how these squid use it.
Since, there's no light in a deep sea, Ink darky would be useless.
Therefore, some people believe that the colossal squid may produce a luminescent color ink.
Because they live at extreme depths within the freezing waters of the Antarctic and only a few have ever been caught, no one knows the true size, how big these things can grow, as it's still a lot to learn about these mysterious deep-sea creatures.