An example is the interaction been tadpoles of the common frog and a freshwater snail. Starfish face predators of their own, such as the giant triton sea snail. There is a venomous snail and a beetle. Molluscs such as the wood snail live up the snow line. Snail and nudibranch species are two common grazers of epiphytes. Whelk is a common name that is applied to various kinds of sea snail. Norfolk Island is home to a radiation of about 40 endemic snail species. It is also known as the Giant African land snail . Cats are known to carry and spread feline lungworm in rat and snail interactions. This may be the basis of the physiological selection found in both species of snail. Its function is to push away sediment as the snail crawls. SpongeBob lives in a submerged pineapple with his pet snail, Gary. Animals that eat "Opuntia" include the prickly pear island snail and "Cyclura" rock iguanas. Tyrian purple is a dull purple dye that is secreted by a common Mediterranean snail. He is planning his latest expedition&colon; to search for the legendary Great Pink Sea Snail.