Crazy emerald crab growth

[Chaka]

I have 3 emerald crabs in my tank and 2 are great, but there is one that is a little crazy. The smaller on has long tentacles that have grown from the shell. I would say they are longer than the diameter of the crab. The tentacles are white, pink in color and have a five finger looking palm to them. It honestly looks like some type of coral growth on shell. It has not molted in some time and started on a leg. Now it looks like a furry little critter in the tank. Any one know what it could be?

 

[Chaka]

I have 3 emerald crabs in my tank and 2 are great, but there is one that is a little crazy. The smaller on has long tentacles that have grown from the shell. I would say they are longer than the diameter of the crab. The tentacles are white, pink in color and have a five finger looking palm to them. It honestly looks like some type of coral growth on shell. It has not molted in some time and started on a leg. Now it looks like a furry little critter in the tank. Any one know what it could be?

anyone?

 

[MammothReefer]

really hard to tell, looks like a hairy crab or pinhead from hellraiser.

 

[BEASTIEPENDENT]

Might it be some kind of sea feather? I once had a (probably) sea feather attached to the shell of a hermit crab and wondered a long time what that tentacle might be.

 

[Bongo Shrimp]

They look like hydroids to me.

Like these:
http://www.divebums.com/week/2007/Apr23-2007/hydroids_kevin-lee.jpg

Or these:
http://www.zoaid.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=6198&g2_serialNumber=4

 

[Chaka]

crab

crab

They look like hydroids to me.

Like these:
http://www.divebums.com/week/2007/Apr23-2007/hydroids_kevin-lee.jpg

Or these:
http://www.zoaid.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=6198&g2_serialNumber=4

So should I be worried about them? If i find a aiptasia on my rock ill boil it, so do I need to get the crab out?

 

[Bongo Shrimp]

I don't think you need to worry about it. Once he molts they will fall off with the shell.