Did you know that perhaps the loudest sound in shallow waters is made by animals the size of your pinky finger?
Snapping shrimp have claws (which makes them look a bit like baby lobsters), but one claw is much bigger than the other. They shut or ‘snap’ their big claw so quickly that it creates a vacuum bubble – the bubble bursts and produces a loud popping sound! (described by Versluis et al, 2000 in journal Science)
Next time you’re walking on a beach or a pier listen for their distinctive crackling sound!