Sometimes nassarius snails act rather odd. They roam wherever, whenever and dont seem to have a sense of fear. Although I have seen them twitch when something scares it. I dunno. He knows what he's doing. I dont know if the nassarius snail co-exists with anemones in the wild, so he might think it's just a coral and deems it harmless.
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30g reef tank, CPR CY192 filter w/ DIY plumb running Rio 17HF return, Coralife 3x 9w UV Sterilizer, 3 24W T5-Helios 10K Daylights/3 24W T5-Helios Blue lights, 2 Logysis blue meteor light strobes (moonlights/24 Blue LEDs).
Tiger tail cuke, asst. snails/hermits, asst. feathers, rainbow acan,zoos,shrooms,bubble,galaxea, asst. shrimp, 2 ocellaris,mandarin,zebrasoma xanthurum,pink-spot watchman,red-striped pistol. | 
Suicide by anemone?! 
