A video showing a scuba diver letting fish enter his mouth to clean his teeth has gone viral on social media. People have expressed mixed feelings about it. Sunday, Jun 22, 2025 ...

Scientists were also interested in studying the whale shark’s oil-filled liver, which keeps it buoyant. Dr Mark Meekan and Kim Brooks work in tandem to collect copepods from the mouth of the whale ...

Cleaner fish are animals that probe the fins, gills and mouths of larger fish to remove mucus and parasites. Cleaner fish generally clean other types of fish, icluding sharks and rays, but some ...

Whale sharks are the the world's largest fish. The filter feeder typically eats microscopic plankton. It does this by pulling a big gulp of ocean water into its mouth like a vacuum cleaner.