ID Please: Coral? Sponge?

[JMartin104]

These popped up a few months ago in my daughter's tank. Tiny and hardly noticeable but now look pretty cool.

The first is a red something. It's soft, appears translucent and "waves" in the current. It's about the size of a dime.

The second is like a leopard pattern. It looks thin, like a potato chip from the side. It's about the size of a pencil eraser. It is soft.

 

[disc1]

Does the red thing have little holes at the ends of the branches? Look close.

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[JMartin104]

Does the red thing have little holes at the ends of the branches? Look close.

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Hard to tell -- too small, but it appears no. The look like tiny white dots.

 

[disc1]

I want to say some sort of macro-algae. The translucent look also makes me think tunicate. A tunicate would have holes, but they might be teensy tiny tiny.

 

[ginger7286]

Macro algae, I have some in my 30.

 

[JMartin104]

I found this:

Nemastoma sp. Class Rhodophyceae, Subclass Florideophycidae, Order Gigartinales, Family Nemastomataceae. Red Sea 08. This looks like mine:

http://www.wetwebmedia.com/Pix%20Of%20The%20Day%20Marine/POTD%20SW%20Arch%2071-89/swpotdarch85.htm

Here we go!

http://marineplantbook.com/marinebooknemastoma.htm