This unassuming octopus pairs bacterial chemistry with evolutionary efficiency to deliver one of the most powerful defenses in all of the ocean. The blue-ringed octopus (genus Hapalochlaena) is small ...

This small, cute looking creature is one of the most dangerous animals in the ocean. It hides on shallow reefs, blending into its surroundings. While snorkeling or walking near the shore, you might ...

It could be easy to miss a blob the size of a golf ball. But its blue hue—the rarest color in nature—stood out against the sand, grabbing researchers’ attention. It wasn’t a blob but an adorable blue ...