The first explanation of disappearance of ships and aircrafts without trace at Bermudan triangle was made in 1988 by British geologist Ben Klennel. Under influence of warmth coming from Earth`s interior methane crystallizes and forms large bubbles underneath bottom sediments. These bubbles can come to the sea surface by insufficient effort, even such as whale passing by. The bubbles turn ships over and the latter are sucked in water funnel. Gases coming to surface can explode while contact with air - as a result airplanes can crash. Australian scientists Joseph Monahan and David may conducted experiments on ship-models in swimming pool and made computer modeling, the results demonstrated that possibility of described above mechanism is even higher that Klennel supposed. Such methane emission from crystal hydrates with following ignition can cause catastrophes in future. Particular danger is connected with climate warming which is stimulated by man-caused carbonic acid exhausts to atmosphere.