There are many other marine species present out there - some of them can be used as bait, some of them can be cooked and as such represent a delicacy in many parts of the world (or can be consumed even raw) and some of them are harmful for humans in many ways ...
Spiny Dye Murex (or Purple Dye Murex) is a medium-sized predatory sea snail in the family Muricidae, also known as the murex snails or the rock snails.