Oomycete
Most oomycetes produce two types of spores. The main dispersing spores are asexual, self-mobile spores called zoospores. These do chemotaxis toward a food source in surface water. A few oomycetes produce asexual spores that are distributed by wind. Oomycetes also produce sexual spores, called "oospores". These are translucent, double-walled, spherical structures which can survive harsh conditions.