Pod homes? Lol. Sorry had to giggle. Looks like a pineapple sponge. Filter feeder. Ok to have.
A pineapple sponge like stated above. Pretty common to see them in a young tank. In the 2 I have run, they showed up in both but have vanished since. Quite possible for them to remain in the tank through its lifespan, but I have never had them remain for a year.