Why they're awesome: The largest animal on Earth is thought to be the blue whale, but these strange sea creatures can grow even longer — reaching up to 150 feet (46 meters) in length. There are ...

The Portuguese man-of-war is a siphonophore, an animal made up of a colony of organisms working together. The man-of-war comprises four separate polyps. It gets its name from the uppermost polyp ...

Spanish holiday hotspots are on alert after strong storms have left an unsettling surprise on their beaches, painting the coastline a dangerous purple hue.