Abstract: A diving toy having hydrostatic depth control adapted to cause said diving toy to continuously seek a predetermined depth in water. The diving toy includes a sealed main body with a motor and a battery compartment for receiving at least one battery positioned inside the sealed main body. A propeller is attached to an axle of the motor protruding through the sealed main body so that when the motor is activated the propeller spins. The sealed main body has a flexible portion disposed substantially rearward on the sealed main body. The flexible portion is hydrostatic pressure sensitive varying the fluid displacement volume and volumetric center of the toy as it dives or climbs. The toy may be adapted to have positive, negative or neutral buoyancy when placed in water.

Abstract: A diving toy that is comprised of a housing with a motor, battery and magnetic reed switch positioned inside the housing. A propeller is attached to an axle of the motor protruding through the rear end of the housing. A ballast is arranged inside the housing to provide positive buoyancy and a front end down attitude. A plurality of fins protrude from the housing surrounding the propeller for improving directional stability. A lever having one end rotatably mounted to the outside of the housing and another end provided with a magnet.