If it "croaked" you'd know it when you took it out. It would be a slime ball and would have smelled horrible. 1st thing you did wrong, shopped at Pecto. They are notorious for not informing and selling to unsuspecting customers, things they don't need or don't know how to take care of....It's about the money not the critter 2nd thing you did wrong, bought a critter without doing your own research before you bought it. 3rd It was still alive. Just freaking out from rolling around. When you got it you should have drip acclimated it for at least an 1-2 hours, slowly. Then lifted it out of the bag, with gloves on and placed it on a piece of live rock in the tank and kinda held it lightly(not squishing it) until it attached. It looked pretty healthy to me, just stressed badly from rolling around. 4 DON'T POKE ANYTHING in your tank! Please research anemone's if you plan to keep them in the future. You really need to have a good idea of what you are doing before trying to keep these. They take forever in the wild to grow and can live for hundreds of years, but inexperienced people take them and drop them in their tanks and they live for a day or two and they wonder why, then go back and buy another................. I had a flower anemone that lived for about 6 years in my 55gal. That was long for one in captivity. I'm not trying to be mean, but I have a soft spot for anemones. Wish I could fill a tank with them!