I was somewhat comforted by knowing that sharks, especially tigers, got sort of nonchalant about getting themselves ... I hated going in without a race mask. ... Then something swept over the shapes on the ocean floor, a shifting of patterns. ... I cut into neutral, still breathing hard. ... The anchor was so well wedged into the crevice that we couldna#39;t get it out again without diving down and removing it byanbsp;...