I guess they are corals or...what?

[Theodora]

Just moved 2 rocks from my reef tank because I bought 2 new corals and needed a little space for them ...and well I saw these ..does anyone know what are those?Looks like baby corals but well..I don t really know =) First time posting here haha ,here is the photo https://imgur.com/a/AdURvu7

 

[Dana Riddle]

Just moved 2 rocks from my reef tank because I bought 2 new corals and needed a little space for them ...and well I saw these ..does anyone know what are those?Looks like baby corals but well..I don t really know =) First time posting here haha ,here is the photo https://imgur.com/a/AdURvu7

Could be a stony coral, or perhaps a zoanthid. Do the tentacles expand? Is the body soft or rigid?

 

[Theodora]

Could be a stony coral, or perhaps a zoanthid. Do the tentacles expand? Is the body soft or rigid?

yes! They have tentacles(so little you need to look closer to see them )!Don t know about the body tho ..seems rigid