Silver fish with a single spot against a marine blue background, it catches a small black jelly fish then swims off.

Galapagos Islands, Ecuador: Close up shot of the scaley head of a Marine Iguana as it licks its lips, Iguana walking briskly along a sandy beach.

Galapagos Islands, Ecuador: Medium view of marine iguana sitting on a boulder on the shoreline, iguana looks around and slides down behind rock.

Shoal of silver fish swim in unison across the screen. They twist and turn as they move creating flashes of light shimmering across the shoal

Shoal of silver fish with yellow heads swim across the screen from right to left, over coral on the sea floor.

Point of view shot (POV) swimming through a reef, passing shoals of beautiful fish. A pacific manta ray approaches and passes by.

Trio of Dolphins swim together around a reflection of the sun and move out of view

Silver fish with large teeth hangs motionless in the sea.

Underwater close up view of the underside of a large sting ray as it swims upwards towards the surface.

Opalescent squid all swimming past camera. Their bodies are tapered, long, thin and white.

Blue and orange colourful fish turns in front of camera with yellow fins flapping.

Camera following a thornback ray swimming through thousands of white squid egg cases in clusters. As the ray swims, it glides over the egg cases that cover the sea bed. Opalescent squid swim in front of the camera, their white translucent bodies are long and thin with tentacles.

Camera moves through sea water as fish swim by, then camera pans up to show a group of Scalloped hammerhead sharks swimming above with sunlight reflecting on them.