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Origin of sea urchin
Words nearby sea urchin
Example sentences from the Web for sea urchin
Driesch has found that a tropism underlies the arrangement of the skeleton in the pluteus larvae of the sea-urchin.Darwin and Modern Science|A.C. Seward and Others
On my way to the front of the peninsula, I looked for “sea-urchin,” but none fell in my way.The Boy Tar|Mayne Reid
From the egg there hatches a tiny larva which does not at all resemble the parent starfish or sea-urchin.
The sea-urchin can thus advance with ease, and even rapidity.The Ocean World:|Louis Figuier
In the starfish we noted five ambulacral areas, one on the under side of each arm; similarly we find five in the sea-urchin.