Life at the Bottom of the Ocean

The belief that marine life did not exist below 550m was known as the ‘azoic theory’ and was born in the 1840s by Edward Forbes, one of the founders of British marine biology and a friend of Jeffreys. The theory was commonly believed for nearly three decades.

In the 1860’s the feasibility of exploring much greater depths using deep-sea dredging evolved and with this came overpowering evidence to prove Forbes’ theory wrong.

Edward Forbes, creator of the azoic theory