National Geographic : 1964 Apr
Number Two---Vonshelf Two-located on a coral ledge 3O feet beneath the sur face of the Red Sea. The ledge is part of Sha'ab I-LIi11i, or "Roman Reef," 25 miles northeast of Port Sudan (neap, page 470). Sinlolle and I are visiting ti' of 111\ men \\-ho are attempting to 1Ive and !work here for a month without co111 ing to the surface. Conshelf Two consists of four prefab ricated steel structures, several fish pens, and some antishark cages. Above us rides our utility ship Rosaldo, which sup plies the undersea hamlet with corn- pressed air, electricity, fresh water, food, and medical care-in short, with life. Above us also is our research vessel Calypso, serving as liaison ship. This is the second Conshelf experi ment we have conducted (page 469). In Conshelf One, a pilot project in the Mediterranean Sea in 1962, two men lived and worked for a week in much smaller quarters-a 1 7-bv-8 -foot cham ber anchored at a depth of 33 feet off an island near Marseille. Now we have launched a much more ambitious expe dition, with more men, more elaborate POTHOLED DOME houses DS-2, Captain Cousteau's diving saucer. Shadowy research ship rides above. Strand of living Virgularia resembles a kinked rope. ('D A( 1IRON,F BY Rt k HT t3 G()O[) MAN(Gj N G.S.