They are not hard to see, either. Even small tritons stand out sharply against the background of a coral reef. Glorious colors and graceful shape. From tiny little ones only as long as my thumb to big ones the size of my forearm. The biggest tritons make the most eggs.
Big ones are quite rare now.
I have interviewed older divers in many islands of the Pacific and they all agree that the triton population has gone down to practically nothing. Yet you can still find them in shell shops and in markets, getting fewer, smaller and more expensive each year. The only reason we kill them is because they are beautiful and we like to have their shells for decorations. On the other hand, they are key species and killing them endangers the whole coral reef ecosystem. The people who live on the islands rely on the coral reef ecosystem for fish and other protein.