Most commonly, this is for heavy fishing such as retrieving broken drill pipe.

The net was a large one, altogether too large and heavy for trout fishing.

Due to heavy fishing of both species, swordfish and tuna of great sizes are increasingly rare.

Although more specimens have since been discovered, the conservation status of this species remains precarious due to heavy fishing and habitat degradation within its range.

Recent heavy commercial fishing of the redfish has required that they be released by the sport fisherman.

The disaster may prove to be cyclical, since the shrimp population, already at risk from heavy fishing, is believed to need the mangroves to reproduce.

Gaseous eruptions occurred in the area before the heavy fishing began, the researchers said, but they were smaller and less frequent.

The seamount's abundant sea life has made it a target for heavy fishing since the 1960s.

It is a commercially exploited species subject to heavy fishing, and has been bred in fish farms for over 50 years.

The disruption of their spawning, combined with excessively heavy fishing, wiped out the species early in the 19th century.