Episode 4
Fish
Fish can fly, sense electricity, swim at over 110kph and even walk on land. From the open ocean to coral reef and storm-ravaged surf to the freshwater springs of Kenya, swim with sharks, mudskippers and convict fish. See ‘sarcastic fringeheads’ fighting for their homes; hunt with sailfish; glide with flying fish; enter the secret world of courting sea-dragons; and even join the epic journey of the tiny, cliff-climbing gobies.
Key animal characters:
• Weedy sea dragons
• Sailfish
• Flying fish
• Sharks
• Hawaiian goby

Australian giant cuttlefish, male changing colour to attract
female

Sarcastic fringehead, California, USA

Pacific giant octopus female protecting her eggs, British
Columbia, Canada