Patent ID: 6926577

Claim:
An apparatus comprising: a substantially cylindrical section having a first end, a second end, and a cavity disposed therein to receive fluid, wherein the substantially cylindrical section decreases in radius toward the first end, the substantially cylindrical section further including control surfaces disposed thereon; a stabilizer coupled with the substantially cylindrical section, to stabilize motion of the apparatus in a body of fluid when the apparatus is to be launched by a user; an elastic membrane attached to the substantially cylindrical section dividing the cavity into a forward portion and an aft portion; a fluid intake port to allow fluid to enter the forward portion; and a launch member coupled with the elastic membrane, the launch member extending through a hole in the first end wherein the launch member terminates into a means for gripping, such that when the user is to pull the means for gripping to elongate the elastic membrane, the forward portion of the cavity is to shrink and the aft portion of the cavity is to expand and fluid is to be expelled from the second end while more fluid is to fill the forward portion through the fluid intake port, and the apparatus is to be propelled through the body of fluid.