NC Sea Grant

Fish Yell When It’s Too Noisy

How fish deal with all the noise in their environment


April 25, 2019 

The ocean is noisy too

We are constantly exposed to noise, whether it’s walking by a construction site or the sound of a siren or a neighbor using a lawn mower. It’s getting harder and harder to find a quiet spot. That’s even true for fish. It turns out there are a lot of things that make noise underwater, including boat traffic, waves and even marine life.

Mind the Sharks

The University of North Carolina Institute of Marine Sciences has been surveying sharks off the coast of North Carolina every summer since 1972. Currently, the survey finds that the numbers of great sharks — such as Great White, Tiger, and Hammerhead sharks — have been steadily declining, but the number of shark bite incidents is increasing.

Making Waves

Ask anybody what they like about North Carolina’s beaches and you’ll likely hear responses like warm sun, warm sand, ocean breeze, and fresh seafood at the restaurants. The answers vary, of course, but I think one thing that everyone likes about the beach is the sound of the waves.

So the question is... What makes an ocean wave?

The answer is simple: wind.

Pages