Underwater photography

The Deep Scattering Layer

First noticed during the latter stages of the Second World War when hydro-graphic survey ships equipped with echo sounders showed a ‘phantom seabed’ appearing on the graphs, the Deep Scattering Layer (DSL) often appeared many hundreds of fathoms above that… Read More ›

Howard Hall and the ‘Deep Sea’

(In 2006, I had the opportunity to chat with legendary underwater film-makers, Howard and Michelle Hall. The following interview was first published in April of that year. ) ———— For filmmaker, Howard Hall, diving and photographing the undersea world has… Read More ›

The Shark Island Mine

In 1975 the entry level diving course that we taught was of four weeks duration and included two evening theory sessions per week with the Saturdays and Sundays given over to practical diving instruction. A standard part of the course… Read More ›