Please id these inverts

ahhjaws

Reefing newb
I have a fairly established tank~3 years old. Noticed a couple of oddities the other day on my live rock. The first looks like a spiders egg sac about 1/4" round. Its off white with a hole in the center. Next there looks to be an anemone about 1/2" round. Next I added a hermit crab the other day but don't know the exact species. He is about 2" long. Thanks for any help.
 

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The first one looks like a Pineapple Sponge or sponge of some sort.

The second one looks like it might be a Rock Anenome of some kind.

The 3rd looks like a Red Legged Hermit.
 
Hello and Welcome! I live in FoCo too!

1. Pineapple sponge, good guy its a harmless filter feeder
2. looks like retracted ball nem to me, also nothing to worry about
3. I would guess red-legged hermit crab as well
 
Isnt that the hermit that grows really big and sometimes isnt reef safe? I will have to check into it, but they look so similar.
 
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