Frogmen Aid Geologists In Seabed Search -- One of the London Sub Aqua Club frogmen under water during a recent search of the Mediterranean seabed. The same equipment is being used in the search for the rock.Frogmen of the London Sub Aqua Club are aiding geologists in the search for a 50 million year old rock. Led by Mr. Jim Phoenix, the party of divers has been exploring the seabed off Pagham, near Bognor, in the hope of making the important geological discovery. They are seeking the mother rock from which a pebble, now in South Kensington (London) Museum, is believed to have originated. August 17, 1954. (Photo by United Press Photo).