Image for Des res

Des res

Duration: 01:26

To protect themselves from sharks and rays, hermit crabs need to find suitable shelters. When a new snail shell is about to become available there is hot competition and fighting will break out between rivals.

Available since: Thu 27 Jan 2011


David Attenborough

This clip is from

The Blue Planet Tidal Seas

7/8 How tides create opportunities for marine life, as dolphins play a deadly game of catch.

First broadcast: 24 Oct 2001

Image for Tidal Seas Not currently available on BBC iPlayer

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