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The polyps also extract
calcium carbonate from the sea water, and use it to build a stony housing
for themselves
calcium carbonate from the sea water, and use it to build a stony housing
for themselves
Full Transcript
00:00:01.000 --> 00:00:04.071
The polyps also extract
calcium carbonate from the sea water,
00:00:04.096 --> 00:00:08.749
and use it to build a stony housing
for themselves.
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Movie Summary
David Attenborough returns to the world's oceans in this sequel to the acclaimed documentary filming rare and unusual creatures of the deep, as well as documenting the problems our oceans face.