So, is the killing of sea animals, especially in the face of extinction and loss, really necessary? Do you need some sea shells sitting in some sand on the toilet? Do you really need to buy your kid that googly-eyed pufferfish that they will forget about in a week?
So what do you do? Well, (1) spread the word that these animals actively die for the curio trade. They aren't washing up on beaches, they are collected and systematically killed for decoration; and (2) stop buying these things. As I said in my Walmart fish post, if you don't want to promote the consumption of something, stop buying it yourself.
What could be any easier than NOT buying something?
Disclaimer: if you are purchasing shells that were collected for meat and done so appropriately, fine. And yes, there are cultures that eat and use seahorses as food or medicine. Maybe those things are fine, maybe not, but what we can do here in the States is at least stop the consumption and thus the collection of live animals only to be killed for decor. Please pass this information along!