The MK11 Observation Helmet was designed by Oceanwalker International in Australia. It is an Underwater Observation Helmet air fed from the surface from either a compressor or compressed air tanks. The air delivery is controlled by a panel operated from the surface. The Oceanwalker Helmet has 360 degrees of non distorted vision and rather than swimming underwater the participant walks along the sea floor. The System works with two trained PADI Divers in the water and six Participant Helmets. The Helmets are air fed from the rear of the unit, and due to the patented design of the system the Helmet does not “fog up” whilst in use.