Abstract
WE wish to report extraordinary concentrations of DDT residues* in California sea lions, Zalophus californianus, which inhabit year round the coastal waters of California and Baja California, Mexico1. These waters receive agricultural runoff from California valleys where DDT has been used extensively2–4, and where residues have been increasing in the primary stages of some coastal pelagic food chains5.
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LE BOEUF, B., BONNELL, M. DDT in California Sea Lions. Nature 234, 108–110 (1971). https://doi.org/10.1038/234108a0
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DOI: https://doi.org/10.1038/234108a0
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