There are marine organisms that everyone knows — if not because they have seen them while diving, then certainly because they have bought them at the supermarket or ordered them at a restaurant… and then there is the vast multitude that no one knows, because they are small, not very colorful, and of no commercial interest.
This large portion of animals and plants is almost always ignored, even by the most experienced divers. But to those who choose to take an interest in them, they can reveal incredible stories that will never again allow them to finish a dive saying the sad phrase, “I didn’t see anything.”
Bonellia viridis
Sexual dimorphism in B. viridis: the female is significantly larger than the male of the species. In fact, she can measure from 10 cm up to 1 meter in length (including the proboscis), while the male is only a few millimeters long.
Bonellia viridisInformation accessible via Google Books: “Comparative Biochemistry: A Comprehensive Treatise, Volume IV: Constituents of Life — Part B focuses on the distribution, biogenesis, and metabolism of cells and organisms”, p. 587 Bioorganic Marine Chemistry, Volume 1, Springer Science & Business Media, Dec 6, 2012, pp. 81 and 155 “Polychaetes & Allies: The Southern Synthesis” by Australian Biological Resources Study, Csiro Publishing, 2000, pp. 354–358, 361–362, 368, 369

