Why it's awesome: Earth's oceans are home to many secretive and unusual creatures that humans rarely see — including giant ...

The main species of jellyfish you're likely to encounter on Welsh beaches are: the lion's mane, compass, barrel or root mouth ...

The most common sea animals are those without a backbone, such as jellyfish and shrimp. There are thousands of species of ...

When it comes time to migrate, new research has found how a free-living coral ignores the classic advice and goes straight towards the light.