Dolphins have long been established as highly-intelligent creatures, and the United States Navy has now begun using them in their new program. They are training the dolphins to act as underwater saboteurs, able to attach magnetic explosive devices to the undersides of enemy ships. Quist investigates the matter, and discovers that these apparently docile creatures are capable of becoming deadly killers - something that he experiences firsthand.
Did You Know?
This episode was wiped by the BBC at some point before the corporation audited its archives in 1978. There is currently no known copy of this edition in existence. See more