When the prey is opened, the sea star pushes its stomach out of its body and into the bivalve, secreting enzymes that digest the prey's soft body tissues. The liquefied bivalve is then absorbed into the stomach. Sea stars feed often, and their size depends on the amount of food they eat, not on their age. Sea stars are eaten by bottom-dwelling fish and crabs, as well as by sea gulls when low tides leave the sea stars exposed. Regeneration will occur as long as one fifth of the sea star's body remains intact. Sea stars breed in the spring, producing as many as 2,500,000 eggs.
So, if a very large amount of air were to be blown or forced into their vaginal canals, it's possible that the air could enter their bloodstream, causing a blockage in a blood vessel. As a result, some of these women, perhaps including the pregnant women's fetus, may experience complications.
Air embolism causing death via IV is extremely rare. Firstly, because IVs are in veins. If an air bubble gets in a vein, not as big of a deal. They usually dissipate. Secondly, it would take a very large amount of air to do any damage at all. I'm talking about a huge syringe (20-40cc) of air being injected at once. If you are a patient in a hospital and see a few tiny bubbles in your IV line there is no need to panic. Air embolism in an artery, however, is another story. The result can be death. What happens is that it is passing along the circulatory system and eventually gets caught in a smaller vessel in the heart (heart attack) or brain (stroke). It acts like a solid object and stops circulation wherever it gets lodged.