Not sure on the first one, some sort of chalice maybe?
Second one looks like a frogspawn (Euphyllia divisa) but could be a torch (Euphylia glabrescens). If there is one "knob" at the end of each tentacle than it is a torch but if the knobs exist along the length of the tentacle as well than it is likely a frog.
The last one is a green nepthea, by far my favorite leather.