,,,asthelecturerepointedout,,thereadingmentionedthatsincethenumberofotherseamammalslikesealionesweredecreasingaswell,thecausecouldnotbepredationastheonlycandidate,orcas,,thelecturestatedthatgiventheabsenceoflargerprayitwaslikelyfororcastochangetheirdiet
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