Abstract: A protective cover for SCUBA air tanks includes a tube of plastic material for snugly fitting around a body of a tank. The tube includes a substantially non-stretchable portion of plastic material having two side edges, and a resiliently stretchable portion of plastic material disposed between the two side edges, for allowing the tube to snugly fit tanks of various sizes. Attachment pads may be disposed on the non-stretchable portion for attaching auxiliary diving equipment. Various rings, clips, buckles or other fasteners are disposed on the tube for attaching auxiliary straps or carrying belts.

Abstract: A signalling device for scuba divers is disclosed. A substantially cylindrical rod has an opening formed therein along its longitudinal axis. A closed loop of resilient latex tubing extends through the opening. The loop of tubing is slipped over the scuba tank. The rod may be banged against the scuba tank for the purpose of signalling by pulling the rod away from the tank and then releasing it.

Abstract: A reversible, quick-adjustable diver's face mask strap includes a body portion formed of a flexible, elastic material having first and second opposite surfaces for contacting the head of a diver. The body portion includes two band portions being partially spaced apart defining an opening therebetween. The strap further includes first and second ribbons attached to the body portion, each of the ribbons having an attachment surface and another surface. Each of the other surfaces are connected to a respective one of the opposite first and second surfaces. Each of the ribbons have fasteners disposed on the attachment surface for releasably fastening the attachment surface to itself when folded to form a loop passing through an opening formed in a diver's face mask. One of the ribbons thereby remains adjustable without removing the mask strap from the diver's head regardless of which one of the opposite surfaces contacts the head of the diver.

Abstract: A self-contained underwater drinking apparatus for scuba divers includes a container for liquid, a tube connected to said container for receiving the liquid from said container, and a mouthpiece integral with said tube for receiving the liquid from said tube. The mouthpiece can be attached to a regulator supplying air to the diver.