Just got my live rock and sand yesterday and I have a number of things on the rock that I'm not to sure what they are.
Fist one:
Second one (sponge I think):
Third one:
Last one (hard to get a picture of it but they one and close and something pops out of it every once and a while):
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Fist one:
Second one (sponge I think):
Third one:
Last one (hard to get a picture of it but they one and close and something pops out of it every once and a while):
Sent from my iPhone using Aquarium Advice