India, March 9 -- Fish and sharks living in the open ocean are impacted more by human pressure than their seabed-dwelling counterparts, according to a new study from The University of Western Australia.

The study published in Science was led by Dr Tom B. Letessier, from the Zoological Society of London and UWA's School of Biological Science, and co-authored by Wen Family Chair in Conservation Professor Jessica Meeuwig and Dr Chris Thompson, from UWA's School of Biological Science and Oceans Institute.

Researchers combined size measurements of almost one million fish and sharks taken from 14 years of baited camera surveys across the globe to investigate the effectiveness of marine protected areas for fish either living in midwater (pelag...