Marlin debunks many of the baseless belief about living creatures from the fish to the gorilla with his firsthand knowledge.

The survival value of a wide range of protective devices used by wild creatures investigated and demonstrated.

Marlin Perkins and Jim Fowler investigate trapping and capturing techniques both primitive and modern.

Marlin Perkins and Jim Fowler perform experiments in a bat cave to reveal how bats maneuver in the dark without colliding. They demonstrate how the intelligent porpoise use inaudible signals to find their way about.

The great cats of the world, lions, tigers and jaguars are placed in an observation room and tested for their reactions to various objects.

Story of how birds of prey zig-zag after their terrified, intended victims.

Mysteries of animal and native life in the Amazon River Valley.

Close-up look at the aggressive and defensive postures assumed by all animals in their natural habitat.

The fur seal answer the call of the Pribilofs and migrate to a group of small islands in the Bering Sea.

A journey to the coral reefs off Bimini to take a deep-sea look at the myriad of underwater inhabitants that flourish in these warm blue waters and the deadly shark.