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This eco-region comprises Madeira, the Canary
Islands, the Cape Verde islands, plus the
Atlantic coastlines of Morocco, Western
Sahara and Mauritania.
The waters in this eco-region are influenced by the
Canary Current, which flows along the African coast
in a southwesterly direction between latitudes 30°N
and 10°N. It also extends offshore to longitude 20°W.
Driven by the prevailing winds, the current, in common
with other eastern boundary currents, is wide, at
about 1000 km, and slow, flowing year-round towards
the equator. On average, the current is about 500
m deep.
As it travels south, it draws upwelled water from
the coast, bringing relatively cool waters toward
the equator. The water brought from below the surface
by the upwelling is nutrient rich, and this supports
highly productive marine systems, particularly for
deep-sea fish and lobsters. The waters in the region
are therefore more temperate rather than the tropical
or sub-tropical that might be expected at these latitudes.
The Canary Current is strongest near the continental
coast, becoming progressively weaker offshore. As
it passes between the Canary Islands and the coast
lying between Gibraltar and Mauritania it accelerates.
The islands create a Oshelteredą zone, with warmer
water being found to the south of the islands. Some
of the commercial species in this eco-region include
sardines, pilchards, horse mackerel, chub mackerel
and hake, with the structure of fisheries changing
over the past few decades as a result of increased
fishing activities.
When diving here, you may find West African manatees
(Trichechus senegalensis) and endangered Atlantic
green turtles (Chelonia mydas) as well as olive
ridley turtles (Lepidochelys olivacea) swimming
slowly among waving sea grasses, while harbour porpoises
search for prey nearby. Humpback whales come to the
eco-region during breeding season.
Canary Current fisheries are increasingly under
pressure from foreign fishing fleets coming mostly
from the European Union countries. These licensed
foreign vessels exploit the fisheries, but do little
for local economies since their profits are exported.
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