Please id these inverts

[ahhjaws]

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.

 

[JohnVH]

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.

 

[little_fish]

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

 

[Waddi]

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.

 

[Neno reefs]

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.

Scarlet Reef Hermit Crab

Reef safe,

 

[Waddi]

White-spotted Hermit Crab (Dardanus megistos)

White-spotted Hermit Crab (Dardanus megistos)

Quote from WetWebMedia
"Dardanus megistos (Herbst 1789), Shell-Breaking Reef Hermit Crab, often sold as the White Spotted. Members of this genus are predaceous, and will gladly consume any fishes they can get their claws on. To six inches. Place with large, aware fishes only. Aquarium and N. Sulawesi pix."

 

[salt_for_brains]

White-spotted Hermit Crab (Dardanus megistos)

White-spotted Hermit Crab (Dardanus megistos)

Quote from WetWebMedia
"Dardanus megistos (Herbst 1789), Shell-Breaking Reef Hermit Crab, often sold as the White Spotted. Members of this genus are predaceous, and will gladly consume any fishes they can get their claws on. To six inches. Place with large, aware fishes only. Aquarium and N. Sulawesi pix."

Good catch Waddi that looks to be exactly what it is.

 

[ErinCahir]

Hello and welcome!! Everyone has you covered.

Good job, Waddi. :)

 

[ahhjaws]

Thanks everyone! Glad I found this site

 

[Waddi]

Haha, thanks kiddies! :D

 

[little_fish]

Excellent catch Waddi!