24K views · 1.3K reactions | Dolphins use echolocation, or biosonar, to navigate, locate food, and investigate their surroundings. They emit a series of clicks through their melon, their round forehead. The sound waves bounce off of objects, and return to the dolphin, who receives the sound waves through their lower jawbone.  Video by Kip Evans from the Cocos Island Hope Spot | Mission Blue | Facebook