To Unplumbed Depths, by Hans Hass

To Unplumbed Depths
by Hans Hass

Hans Hass was an Austrian biologist and underwater diving pioneer. He was known mainly for being among the first scientists to popularise coral reefs, stingrays and sharks. He pioneered the making of documentaries filmed underwater and led the development of a type of rebreather.

Hardback with dust jacket . Very good condition.

Black and white and colour photographs throughout.
1972, Harrap, London (First English edition)
266 pages, 175mm x 243mm (approx. 7in x 9.5in)