From worms with squid-like tentacles to fish with teeth on their tongues, here are some of the most alien-looking creatures in the deep ocean. When you purchase through links on our site, we may earn ...

From a refreshing dip on a hot summer’s day to snorkelling, diving and surfing, people around the world are drawn to the ocean. But lurking beneath the waves are lots of not-so-friendly sea-dwellers, ...