saclike
7.minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves.
8.primitive marine animal having a saclike unsegmented body and a urochord (a notochord) conspicuous in the larva.
9.Any of various hollow or inflated saclike organs or structures, such as the floats of certain seaweeds or the specialized traps of bladderworts.
10.radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms.

