Sharks and their relatives : ecology and conservation
1998
Bräutigam, Amie |
Camhi, Merry |
Fordham, Sonja V. |
Fowler, Sarah |
Musick, John |
Sharks and their relatives, the rays and chimaeras, are the diverse group of cartilaginous fishes that have evolved over 400 million years. Historically considered of low economic value to large-scale fisheries, today many of these fishes have become the target of directed commercial and recreational fisheries around the world, and they are increasingly taken in the by-catch of fisheries targeting other species.