Need a Few ID's

[GlassMunky]

Obviosly the first ones are some kind of sponge, but i was wondering if anyone knew what kind. the first one is kinda big (about the size of a nickle to a quarter) and is white. the other one came on the skeleton of one of my corals and kinda looks like a pineapple sponge buut its lime green.

These things i have NO idea what they are. i noticed one a few months ago but it was reall small and i could never get a picture of it. now this whole little crevise area under one of my rocks is filled with them. they are basically just a bunch of clear tenticles with little balls on the end of them. anyone have an idea?

 

[Bongo Shrimp]

Sponge
Sponge
Glass nem
Glass nem

Sponges are harmless filter feeders and the glass nems are fine as long as they don't start to take over.

 

[cbrownfish]

There are thousands of sponges but this may help -- Sponge Hitch Hikers

The clear tentacle creature is a hidden cup coral.

 

[GlassMunky]

Pretty sure its not a glass. kinda looks like the hidden cup al, but i'm not sure that these have a stony base....

 

[lkbart]

The things in the bottom photos appear to be Orange Ball Anemones (Pseudocorynactis caribbeorum). The ones in my tank aren't as bright orange as in the link & most of mine are more clear than the one in the photos. I don't think they get as much coloration when they stay out of the light.
Cayman Islands: Travel and Nature Photography for your Desktop
Mine from the top:

From the side:

So the thing in the hole in the rock just to the left and below the bottom anemone, is that an eyeball?? Almost creepy!!

 

[Reefmack]

Scroll down and find Corynactis and Pseudocorynactis:

http://www.advancedaquarist.com/issues/oct2002/invert.htm

My guess is one of these ball anemone species.

 

[GlassMunky]

I think you guys are right. one of the Corynactis i believe. thanks! and i didnt see the "eye" in the rock untill you mentioned it, but it does look creepy

 

[cbrownfish]

Corynactis is certainly a possibility but don't rule out the Phyllangia americana (hidden cup) completely. The stoney skeleton is not always as obvious as they are in many of the web pics. Most will start in a rock crevice and you will only see the tentacles.

 

[GlassMunky]

As long as I know that they aren't bad guys I'm good. =)