Excellent cephalopod paper and pictures. Their home page also leads to many more very good web pages on the other molluscs Very. It is very well done and fun as well. It was an unusual discovery in more than one way. Of the 1.5 million known species, one-third are animals.
Most animal species live on land, but the greatest diversity of animal phyla are marine.
Many more Malacological, conchological and other links. Inc. Sunderland, Mass 1990 Invertebrates Kozloff. E.N. Saunders Publishing, Harcourt Brace College Publishers, Philadelphia.