zoology

Reproduction poses certain problems for sessile organisms, since they cannot actively search for a mate. Many types of corals and sea urchins therefore employ a slightly different reproductive technique, releasing gametes into the water where they hopefully will join up with their counterparts to produce a new generation.

Native to South America, Red Imported Fire Ants make their homes underground. These nests are subject to flooding during rainy periods. On its own, a single fire ant Solenopsis invicta will struggle to stay afloat in water, and may even drown.