Marlin and Tom Allen continue intensive studies with Canadian experts both on the surface and under frigid waters of the adult seals as they swim along massive walls of blue green ice.

Marlin and Tom Allen join scientists doing shark research in an undersea laboratory in the Bahamian waters.

The cheetah, leopard and lion, ever watchful of each other, are forced to share the same water hole during the dry season in Africa.

We watch the exciting Australian gray kangaroo in the lofty eucalyptus forest along with the giant emus, smaller fowl, dingo, lizards and pythons all strange neighbors.

Marlin and Tom Allen join an Australian curator on an expedition to capture the most venomous snake in the world at night beneath the Great Barrier Reef.

This hammock of the Florida Everglades is a small island of dry ground surrounded by boggy marshland which provides refuge and habitat for a multitude of wildlife including the otter which observes racoons, pumas and snakes.

Marlin observes the great migrating herd of caribou being urged northward on a migratory cycle of life while scientists tag the animals as they swim rivers in an effort to keep track of their travel habits.

An African leopard maintains its domain in and around a kopje, which is a rocky outcropping providing the habitation for many smaller animals.

Marlin joins Dr. Philip Kahl, ornithologist, in Kenya's great Rift Valley for close observations of bird life, particularly the incredibly numerous populations of the greater and lesser flamingos for which this lake is famous.

Seals occupying the Pacific Coastal Northwest including the largest of all pinnipeds, the enormous elephant seal, are under observation by Marlin and Tom Allen.

The largest land lizard in the world, the komodo dragon is found only on four small Indonesian Islands where we find Marlin in close study of the dangerous lizard.

A careful scientific study of a unique species of monkey who lives under conditions of climate more harsh than those endured by any other primate species in the world.