Sea otters were one of more than 20 species hit hard by the 1980 Exxon Valdez oil spill, but their numbers have slowly recovered and are now at pre-spill levels, a new study reports.
Sea otters were one of more than 20 species hit hard by the 1980 Exxon Valdez oil spill, but their numbers have slowly recovered and are now at pre-spill levels, a new study reports.
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