SAN FRANCISCO – A California ecosystem has gotten a big boost from an adorable, fluffy and hungry friend. At Elkhorn Slough National Estuarine Research Reserve, a newly-reinvigorated population of native southern sea otters has eaten so many invasive European green crabs that researchers say the otters have locally solved a problem that has plagued the West Coast for … [Read more...] about How Adorable Sea Otters Are Saving California’s Ecosystem by Battling Invasive Species