Here's a description of the video: The video shows several people snorkeling in shallow, clear turquoise water. The seabed is visible and covered with seagrass and rocks. One person wearing a bright, long-sleeved patterned rashguard points down. A sea turtle is revealed on the seabed. The turtle is facing the camera, moving slowly amongst the vegetation. Other snorkelers with flippers are partially visible at the edges of the frame. The camera appears to be attached to the head of one of the snorkelers.