Sierra Leone is located in the southwestern sector of the great bulge of West Africa and lies at the southern extension of the north-west aerobic upwelling zone. Geographically, it lies between 7° N and 10° N and is bordered on the north and east bythe Republic of Guinea and on the south by Liberia (Figure 1). The continental shelf is about 120 km wide in the North at Yeliboya and tapers to only 13 km wide at Sulima in the south. Its coastline is about 560 km and the shelf covers an area of about25 000 km2 (Fisheries of Sierra Leone, 2003).
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