A look at aquatic wildlife in this trailer (01:09)

Clip: Australian sea lions (00:42)

Clip: Reef squid (00:49)

Clip: Coral triangle 1: coral (00:55)

Clip: Coral triangle 2: sharks and fish (01:27)

Interview: Michelle Hall "On the Austrailian Sea Lions" (00:50)

Clip: Green sea turtles and jellyfish (00:38)

Interview: Howard Hall "On the shark dive" (00:38)