This document discusses different types of floating in swimming. It defines floating as lying on the water's surface to breathe easily and conserve energy. Floating differs from swimming which uses deliberate arm and leg motions to move through water, while floating involves staying on the surface without drowning. The three types of float discussed are the survival float (also called turtle float), back float, and treading. The survival float has a swimmer wrapping their arms around bent knees. The back float involves leaning back in the water while holding the poolside. Treading keeps the head above water without moving positions.