Colossal squid are considered to be the world’s largest known invertebrates. When fully grown, they can reach up to 23-feet in length. For perspective, that is nearly the size of a small fire truck.

For over a century, the colossal squid has been one of the deep sea’s most slippery enigmas. Known mostly through bits and pieces found in whale bellies and a handful of dying adults spotted by ...

The extreme investigators at How to Survive examine whether a human could survive an encounter with a giant squid alone.