A fish that's so frightened of water it hides away in a miniature cave has been filmed for the first time.
The leaping blenny shelters three feet above the tide in Guam, Micronesia, fleeing for higher ground when the smallest of waves threatens to approach.
The poor swimmer, which resorts to rolling its body in puddles to stay wet, was captured on film by the BBC's Blue Planet II for its latest episode, Coasts.
The Pacific Leaping Blenny is so scared of the sea that it shelters in a cave above the tide and rolls in puddles in order to remain wet
Introducing the Pacific fish, narrator Sir David Attenborough reveals the creature's sea-fearing habits.
'One marine creature has virtually abandoned the sea altogether,' he says.
'On a few remote Pacific islands lives the most terrestrial fish on the planet.
'These Pacific Leaping Blenny seem afraid of the waves. They are poor swimmers and would be easy prey in the sea.'
The blenny flees for higher ground the moment it believes a wave is approaching its crevice shelter
The fish can leap much farther than its three-inch body length in order to avoid being swept into the sea and feeds on algae