Catching a Razor Fish

". Bern shows how to catch a Razor Fish on Sword Sands in Langstone Harbour near Portsmouth USING SALT!! (That's for you Morph Anderson) Filmed on a hot day in April, here the UK. (South Coast)"

So in in order to catch this fish, you need to pour salt on beach salt. Then on top of that salt on salt, you have to pour water, which contains salt (Anybody notices the asyndeton?). Isn't living inside salt enough for the fish to get out.
Sorce: YouTube