What are these things on my glass? (SW Aquarium)?
I have a saltwater aquarium with live rock. It's been up and running for about 5 months now.
I have these white dots on my glass in varying sizes- most about the size of the ballpoint on a pen. They look like tiny little shells- swirly like a snail- and have even tinier tentacles coming out of the side.
What are they?
It looks like a teeny white nautilus (sp?)
Sounds like it may be a hydroid.