The colossal squid, the heaviest invertebrate in the world, was captured on video swimming in the deep sea for the first time since it was identified a century ago. Subscribe to read this story ...

You may have heard of the giant squid, a massive underwater creature known to grow up to about 43 feet. In 2006, Japanese scientists captured a young female of the species on camera for the first time ...

Hundreds to thousands of feet below the surface of the ocean, beyond where sunlight can reach, another world exists. It’s called the twilight zone and the animals here vary from microscopic to very ...