[Sk8r]

Mind, nassarius snails will make it about 10" up the glass---fast---before their slime overwhelms their energy and they sort of U turn and slide and fall down. I've never seen one get on rock.

If you get a pic of your brown rock-climbing nassarius I'd sort of like to fly them by the Invertebrate forum to find out if they are a legitmate subspecies or something else---maybe a perfectly 'fine' something else, but I'm just curious now. Remember that nassarius are carnivores, and the white ones have the polite habit of waiting until something is sincerely dead. I just want to be sure the brown ones are as polite.

Note: just did some googling, and found Nassarius Vibex, plus a kissing cousin, the New England and offshore-British Dog Whelk, which as you can tell, is a whelk---nassarius are close to the whelks, but better mannered. The dog whelk, which is what I fear is being sold on Ebay, [it can be collected on the coast] is indeed a scavenger, but has a nasty habit of preying on clams and limpets and other shellfish by boring a hole into the shell and having lunch. If you have brown nassarius, I'd just put them to work in the refugium, if you have clams or limpets upstairs.