Whitetip reef shark
The whitetip reef shark is usually seen swimming in clear waters along coral reefs, and has been reported at depths to up to 1,083 feet (330 metres). This species rarely swims to the surface, and is capable of lying motionless on the bottom for long periods of time. During daylight hours, whitetip reef sharks form large groups in caves, sometimes appearing stacked up like a pile of logs. The same sharks often return repeatedly to the same cave for long periods of time, changing location only periodically. The whitetip reef shark is most active throughout the night.