Dive into the depths of the ocean to discover seven rare deep-sea creatures so strange and elusive, you won't believe they ...

Add Yahoo as a preferred source to see more of our stories on Google. Sea creatures have adapted to help them thrive in extreme environments. Unusual features allow them to live thousands of feet ...

From the octopus that walks on land to another that grows its own ‘lifejacket’, discover these unusual species ...

(CNN) — Only a scattering of light penetrates the deep water, more than 300 feet beneath the ocean surface off the coast of Guam. It’s like twilight to the human eye, even in the middle of the day.

GUAM — Only a scattering of light penetrates the deep water, more than 300 feet beneath the ocean surface off the coast of Guam. It's like twilight to the human eye, even in the middle of the day.

Only a scattering of light penetrates the deep water, more than 300 feet beneath the ocean surface off the coast of Guam. It’s like twilight to the human eye, even in the middle of the day. This part ...