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.

Upside-down jellyfish swimming down to the seabed.

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.

A scalloped hammerhead shark swimming past a shoal of yellow fish.

A rainbow runner fish and a barberfish swimming alongside each other. The rainbow runner fish is trying to catch smaller fish in its mouth.

Close up of Mantis-Shrimp with large eyes protruding from its head moving independently.

Side view of Blue Whale swimming underwater slowly past camera from right to left, swimming just below surface of water

Gelatinous zooplankton floats and drifts in the sea. It has black stripes inside which contrast against the blue ocean.

Scalloped hammerhead shark swimming in blue water. Shark swims across frame.

Two rainbow runner fish circling a barberfish over a reef.

A scalloped hammerhead shark swimming through a shoal of fish over a reef.

Travelling shot of the sea bed. The camera moves through a coral seascape.

Mantis-Shrimp with its head protruding from a hole on seabed. It then leaps out and displays yellow and blue legs.

A moon-jellyfish swimming silhouetted against the water's surface.

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.

Single seal feeding on the sea floor.

A scalloped hammerhead shark swimming above a shoal of yellow fish.

Yellow and black fish swims against grey coral background catching jelly fish

Shoal or school of creole wrasse tropical fish swimming in all directions against blue sea water, they are silhouetted so appear dark in colour

Manatee swims along sea floor with rays of sunlight reflecting across its body. It approaches the camera then turns to the left.

Static shot of orange coral showing texture and shape of polyps.

A group of scalloped hammerhead sharks swimming.

Shoal or school of creole wrasse tropical fish swimming in all directions against blue sea water, they are bright blue in colour

A Pacific Manta Ray swimming down towards a coral reef.

Mass of little pink jellyfish swarming against a blue background

Close-up shot of a large shoal of blue-striped snapper fish swimming together.

Underwater shot of a Southern Right Whale swimming in the ocean towards an underwater photographer who takes photos of the whale. The cameraman looks tiny as the whale swims to be on his side.

Gelatinous zooplankton floats and drifts in the sea. It has red spots inside which contrast against the blue ocean.

A rainbow runner fish trying to catch smaller fish in its mouth, while a barberfish swims closeby.

Silver fish with large teeth hangs motionless in the sea, it then snaps it jaws and catches an item of prey before changing position.

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

Blue-striped snappers swimming over reef, their yellow colouring looks striking against the blue of the water. As the fish swim out of sight, we can see a couple of hammerhead sharks in the distance.

Slow tracking shot underwater next to a coral reef, some of the coral looks like a brain. The camera goes lower and descends deeper into the sea, travelling along the reef. The reef forms patterns against the blue backdrop of the water, you can see small fish swimming. Orange coral forms web-like patterns. There are numerous shapes formed by the different corals as the camera moves gracefully past.

Solo seal swims into view and tries to catch a Puffer Fish, it lets go and then attempts to catch it again. The Puffer Fish then swims away.

Pair of yellow and black fish swim against a blue sea background catching black jellyfish.

Underwater shot of soldierfish swimming over a coral reef with blue-striped snappers swimming in the background.

Point of view shot (POV) swimming above shoals of beautiful bright yellow fish. In the distance a group of scalloped hammerhead sharks can be seen.

Mass of tiny jelly fish floating near the sea surface, the camera moves though the swarm capturing close ups of individual jelly fish.

Shoal or school of bright blue creole wrasse tropical fish swimming against blue sea water. Another breed of fish, a bit bigger, swims through them, an indvidual in the crowd.