There are many terrestrial species with a strong reliance on sound, but only the bat comes close to the complete reliance seen in many marine and aquatic species. Just as the bat needs sound to find prey and navigate its nocturnal world, species that inhabit water use sound to overcome the rapid loss of light at depth. The use of sound to locate prey and mates, navigate along migration routes, communicate with conspecifics and defend against predators is seen in a diversity of forms in the ocean. With increasing ocean noise threatening more well-known top predators, like the southern resident killer whales, understanding the impacts further down the food web has never been more important.
While most people know about the songs and sounds made by whales, few people know that other animals in the ocean make sound too! Here’s a look at some of the more interesting examples from shrimp to fish.