Image for Sea sponge

Sea sponge

Duration: 01:32

David Attenborough shows us why the Venus flower basket sea sponge is so amazing.

Available since: Mon 5 Nov 2012

This clip is from

Natural World 2012-2013, Attenborough's Ark: Natural World Special

5/10 David Attenborough picks ten animals that he would most like to save from extinction.

First broadcast: 09 Nov 2012

Image for Attenborough's Ark: Natural World Special Not currently available on BBC iPlayer

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