Pin Cushion Sea Urchin behaviour

[Anemonee]

My new little pin cushion urchin keeps to the top of the tank. Like exposed to air kinda out of the tank top of the tank. Not overly alarming but..

I noticed it also flips on its back and sticks it’s mouth out of the water.. is this normal?

https://uploads.tapatalk-cdn.com/20181125/3fe0fe11cc448867cfba27d43a812a37.jpg


Sent from my iPhone using Tapatalk

[BeachVacationer]

Looks like a tuxedo urchin? Mine usually doesn't do that. Perhaps water parameters are off? Does it eat algae if you give it? Mine also eats small bits of raw scallop.