What is this.

[Poli]

No idea just saw it today. Could fit on your pinki nail

 

[blaxsun]

Egg of some type...? Could also be a sponge I guess, but it looks too round and smooth to be a sponge.

 

[Pickle_soup]

No idea just saw it today. Could fit on your pinki nail

Far from an expert, but I think it's a closed robot.

 

[EeyoreIsMySpiritAnimal]

No idea just saw it today. Could fit on your pinki nail

Looks like a sponge

 

[Dbichler]

Could be bubble algae

 

[EeyoreIsMySpiritAnimal]

Could be bubble algae

No.