Saturday, March 21, 2009

Juvenile flat periwinkles

These are juvenile flat periwinkles (Littorina obtusata) developing in a blob of jelly on the surface of a seaweed. Each animal, developing inside its translucent, delicate, helical shell, is about half a millimetre in diameter at this stage. When it hatches from the jelly this marine snail will eventually reach a diameter of about one and half centimetres.

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.