ID's Please Pictures attached

[Pazil]

I found these .... what look to be egg sacks in a colony of zoanthids about 3 weeks ago anyone have any idea what they are....



Around the same time I found 2 patches of these in different areas of the tank and they seem to be growing... again maybe egg sacks .. but not sure?



Thanks in adavance

[justinl]

dunno what the first is. are you sure the paler circles aren't actually holes? if they are, I say some kind of sponge.

the second are tunicates, sea squirts. harmless filter feeder.

[noirsphynx]

Originally Posted by justinl

dunno what the first is. Are you sure the paler circles aren't actually holes? If they are, i say some kind of sponge.

The second are tunicates, sea squirts. Harmless filter feeder.

+1

[Zoaelite]

Both have classic Porocytes (pinacocytes) structure, which would indicate that there sponges and not egg sacks. I know alot of the zoa colonies I have collected have small sponges/ other growths in between the polyps. The purple one is kind of cool looking, consider it a bonus!
Levi
*Edit, sorry the second one is a sea squirt another harmless filter feeder*

[Pazil]

OK ... so no worries with them then... Thanks guys!!