Between 1950 and 2003, 90% of top predators in the oceans (tuna, shark etc.) disappeared.
Currently factory ships with nets up to 60 km (yes, sixty) long use sonar to find shoals of all types of fish. Many species are on the brink of extinction.
??If present trends continue, commercial fishing as we know it will have collapsed by the year 2050?. David Attenborough

A sobering statistic and an excellent pic