If possible, can edit the pictures and put a circle or an arrow pointing to what you want us to ID for you as i am not quite sure what you mat be refering too...
1st pick is hard to tell since it hasnt the coral hasnt opened Im THINKING zoo, but thats just a shot in the dark, second pic is mushrooms not sure what kind but it could aslo have a sponge attached to it as well, other rocks just look like they have coroline algae on it.
the round discs are mushroom or rhichordeas and the thing wedged into the rock looks like either a limpet or if it has two shells(one on either side) it is a clam.