On September 15 , 2006, Norway Post has issued the marine life stamp series following to the previous edition with the featured species, Sea urchins, and Cuckoo wrasse. The issue stamps are two single stamps.
Sea Urchin
Sea urchins are small, spiny, globular animals which, their shell, is round and spiny, typically from 3 to 10 centimetres across, constitute the class Echinoidea of the echinoderm phylum. They inhabit all oceans. Common colors include black and dull shades of green, olive, brown, purple, and red.
Sea urchins move slowly, feeding mostly on algae, but can also feed on sea cucumbers, and a wide range of invertebrates such as mussels, polychaetes, sponges, brittle stars and crinoids. Their predator are sea otters, wolf eels, triggerfish.
