Where does barnacles live?

Barnacles live deep down at the bottom of the ocean. Usually around 500 - 2500 feet.

All barnacles are marine, meaning they live in the water. Most inhabit shallow or tidal waters, with 75% of barnacle species living at water depths of less than 300 ft (100 m). However, they have been found at great depths of 2,000 ft (600 m).