The Sea-shroom Zombie is a regular zombie with a Sea-shroom for a head. It shoots short-ranged spores at Plants and does exactly the same thing as a Puff-shroom zomplant. It can only appear in the pool and does not wear a Ducky Tube because it is aquatic. It only appears in Fog levels or when there is a Coffee Bean Zombie.
It absorbs 10 normal damage shots, the same as a regular zombie.