The giant squid is among the largest invertebrates on Earth, but this deep sea creature has rarely been observed by humans -- alive. Over the centuries, many dead giant squid have washed up on the beach and been found by people, inspiring tales of sea monsters such as the Kraken. This scientific illustration shows off the squid's two long tentacle, which it uses to grab food from a distance, and its 8 shorter arms. Learn much more about the giant squid at our Giant Squid fact page.