This is part of a series of ocean infographics by artist Don Foley. These infographics also appear in Oceana board member Ted Danson’s book, “Oceana: Our Endangered Oceans and What We Can Do to Save Them.”
Bottom trawls, enormous fishing nets that are dragged across the sea floor, clear-cut everything living in their path. The mouths of the largest nets are big enough to swallow a Boeing 747 Jumbo Jet, and trawls and dredges can destroy century-old coral reefs in mere moments.
How Extensive is the Damage? (Fig. A)
• The largest deep-sea bottom trawling ships—“supertrawlers” —are 450 feet or longer (the length of 1.5 football fields).
• A large trawler can drag over a half-acre swath of seabed with one pass.
• High-seas bottom trawlers destroy 580 square miles of seabed each day.
• Each year, the world’s fleet of bottom trawlers disturbs a seabed area twice the size of the contiguous United States.
• Deep-sea trawling destroys seabed habitat at a faster rate than the aggregate loss of the world’s tropical rain forests.
• European scientists have calculated that bottom-dragging trawlers in the North Sea destroy 16 pounds of marine animals for every pound of marketable sole that is caught.
Trawler Doors (Fig. B)
Heavy doors keep the mouth of the net open and on the seafloor. Rubber and steel rockhoppers roll across the seafloor, while floats lift open the net above them.
This is the third in a series of ocean infographics by artist Don Foley. These infographics also appear in Oceana board member Ted Danson’s book, “Oceana: Our Endangered Oceans and What We Can Do to Save Them.”
Last year’s Deepwater Horizon blowout in the Gulf of Mexico was not an isolated event. The exploding rig was especially tragic, but the truth is that the oil industry produces pollution every day, as today’s infographic illustrates:
The small spills associated with oil extraction, transportation, and consumption add up to about 195 million gallons every year. That’s as much as one Deepwater Horizon gusher.
As we saw in the Gulf of Mexico in 2010, extracting oil from the seafloor is dangerous business. Everyday drilling and extracting result in chronic leaks that add up to 11 million gallons of oil pollution annually.
Transporting oil is also a major source of pollution. Sometimes ships intentionally discharge what’s known as oily ballast water—the thousands of gallons of dirty water used to keep a giant transport ship stable. Otherwise, despite their best attempts, moving oil around inevitably results in spills to the tune of 44 million gallons a year.
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