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Ok so the other day I saw this little guy running reallly fast around on the glass I have no idea what he is I have never seen one bofore then today I saw this I think it is a pineapple sponge but it doesn't look the same as my otheres
First pic is a pod. Second and third are "pineapple sponges". That is just a name given to sponges with that general look. They are probably different species but still a sponge