A protective mucous cocoon surrounds this parrotfish as it sleeps in Australia's Great Barrier Reef. This layer of protection helps fend off predators so parrotfish can get a good night's rest.

Fish often avoid intense stimuli, but scientists and animal welfare groups have long debated whether fish can feel pain. So is there an answer? Animal rights organization PETA claims on its website ...

Subscribe to Marlin magazine and get a year of highly collectible, keepsake editions – plus access to the digital edition and archives. Sign up for the free Marlin email newsletter. As an angler and ...

If you have children, or ever interact with them, the chances are you have heard them ask about whether or not fish sleep. On the surface, this seems like a very simple question, but trying to give ...

Add Yahoo as a preferred source to see more of our stories on Google. Coral reefs are alive with sound, and new 360° recording technology reveals the hidden voices of fish and shrimp, offering a ...

Some deep-sea fish may be able to see light in a different way from most other vertebrates, according to a new study. The ...

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

150 years after they were discovered, researchers have identified how specific nerve-cell structures on the penis and clitoris are activated. Although these structures, called Krause corpuscles, are ...