The world's largest invertebrate remained hidden from humanity until a tantalising glimpse 100 years ago. But it would be ...

1. The colossal squid is the planet’s largest squid, mollusc, and invertebrate (by mass) -- yet it isn’t without its own ...

Giant and colossal squid have the largest eyes in the animal ... It’s thought they evolved to spot large predators, such as sperm whales. They do not have irises or eyelids as they are used ...

The enormous eyes of the colossal squid are thought to have evolved to detect large predators such as sperm whales rather than spot prey at long distances. Small juveniles are thought to live ...