11. "L . littorea " is now the most common marine snail along the North Atlantic coast. 12. Like all species within the genus " Conus ", these marine snails are predatory and venomous. 13. Phylum Mollusca-cone snails and related predatory marine snails , some octopuses ( notably the blue-ringed octopus ). 14. Predatory marine snails such as the Naticidae use the radula plus an acidic secretion to bore through the shell of other molluscs. 15. Some marine snails such as abalone and top snails, Trochidae, have numerous small tentacles around the edge of the mantle. 16. A notable and much-studied invertebrate of Heron Island is " Cerithium moniliferum ", a small marine snail . 17. Natural causes appear to have claimed just one of the animals, a marine snail that used to live off New England's shores. 18. British and Dutch tests have shown the substance to cause mutations in marine snails and the World Wildlife Fund is calling for a global ban. 19. But British and Dutch tests have shown the substance to cause mutations in marine snails and the World Wildlife Fund is calling for its global ban. 20. But British and Dutch tests have shown the substance to cause mutations in marine snails , and the World Wildlife Fund is calling for its global ban.
