Betta Air Action Diver's Head is a bright, colourful, and fun ornament which will be very appealing to children's tanks. It contains some hidey holes and can even blow bubbles out of the snorkel ! A small air pump such as a Betta AP-2000 will be sufficient enough to get the bubbles streaming out. Approximate dimensions 10cm (l) x 9.5cm (w) x 11cm (h).