Large quantities of soles are obtained from a trawling ground near Cape Agulhas.
This, though once the predominant industry, has been surpassed by the deep-sea fisheries, which derived a great impetus from beam-trawling, introduced in 1882, and steam line fishing in 1889, and threaten to rival if not to eclipse those of Grimsby.
The development of the steam trawling-vessel is illustrated by the increase in numbers of these vessels from 480 in 1893 to 1135 in 1903.
The introduction of trawling revived this to some extent, and despite the distance of the city from the iron fields there is a fair yearly output of iron vessels.
Fishing and trawling are carried on chiefly off the Italian (especially Ligurian, Austrian and Tunisian coasts; coral is found principally near Sardinia and Sicily, and sponges almost exclusively off Sicily arid Tunisia in tile neighborhood of Sfax.