sealife

It crawls slowly across the ocean floor, but when danger appears, the sea cucumber has an extraordinary trick that is fascinating scientists and engineers.

It looks like a simple, transparent blob living deep in the ocean, but it’s actually an animal. And for most of its life, it manages to survive without an active brain at all.

For centuries, researchers could not figure out where eels came from or how they reproduced. The truth turned out to be astonishing.