8.3M views · 42K reactions | These are the secret sounds of fish. #OurBluePlanet | BBC Earth | Facebook

What sound does a fish make? Turns out, quite a lot. Using 360-degree cameras and sensitive microphones, researchers have recorded fish producing an unexpected mix of thumps, honks, burps, rattles, and clicks. Unlike birds or whales, fish don’t sing with lungs, they’ve evolved quirky ways to make noise. Triggerfish drum their fins, snappers rattle their swim bladders, soldierfish vibrate sonic muscles, and parrotfish scrape algae with their beaks. These sounds help them court mates, defend terri

16K views · 390 reactions | Pilot fish swimming around big great white | White Shark Ocean | Facebook

Pilotfish are often seen swimming close to sharks, especially the larger, pelagic species. This is because they have a mutualistic relationship. The pilot fish benefit by getting protection from predators and regular food supply from scraps left behind by the shark. The pilot fish in return, remove dead skin and parasites from the shark’s body, including the gill area. By acting as cleaner fish, they reduce the risk of infection and disease for the sharks. Video: Byron Dilkes @byron_dilkes | Sav

Did you know about this unique ocean relationship? The pilot fish follow the sharks eating their food scraps & parasites. They also gain protection from large predatory fish that would normally hunt them. The sharks get a cleaning in return. 🦈💙🐟 #oceanicwhitetip #pilotfish #oceanicwhitetips #ocean #sharkdiving #sharkdiver | Kayleigh Nicole Grant