capsules with eggs and embryos stramonita haemastoma and grooved sea squirt (microcosmus sabatieri) undersea

egg embryo mass capsule florida rocksnail red-mouthed rock shell dog winkle redmouthed southern oyster drill sea snail mollusk mollusc grooved squirt fig violet tunicate undersea snorkeling underwater nature wild diving wildlife marine fauna mediterranean aegean life capsules eggs embryos stramonita haemastoma microcosmus sabatieri greece halkidiki