Pak jumps off the 500m cliff, his descent slowed by the low gravity and using his shirt as a drogue parachute, and is quickly rescued by the waiting boat. As they ride back, tidal waves form in the cylindrical sea, created by the movements of Rama itself as it makes course corrections. When the crew arrives at base, they see a variety of odd creatures inspecting their camp. When one is found damaged and apparently lifeless, the team's doctor/biologist Surgeon-Commander Laura Ernst inspects it, and discovers it to be a hybrid biological entity and robot—eventually termed a "biot". It, and by assumption the others, are powered by internal batteries (much like those of terrestrial electric eels) and possess some intelligence. They are believed to be the drones of Rama's still-absent builders.