I usually prefer taking pictures underwater looking up to my subject. it gives more light. On that occasion, I shot down as the female tiger shark swam right under my fins and there was a blacktip shark swimming by too. I like the square head of the tiger and the eye that follows you as the shark swims pass.
Motormarine II EX, 35mm
Sea & Sea Flashgun
Fuji Sensia 100
Off Aliwal Schoal, near Umkommaas, South Africa