Black Sea jellyfish
... that the Black Sea jellyfish has become established in the estuaries of the Petaluma and Napa Rivers flowing into San Francisco Bay?
... that the <b id="mwCsM"><a href="./Maeotias" id="mwCsQ" rel="mw:WikiLink" title="Maeotias">Black Sea jellyfish</a></b> has become established in the estuaries of the <a href="./Petaluma_River" id="mwCsU" rel="mw:WikiLink" title="Petaluma River">Petaluma</a> and <a href="./Napa_River" id="mwCsY" rel="mw:WikiLink" title="Napa River">Napa Rivers</a> flowing into <a href="./San_Francisco_Bay" id="mwCsc" rel="mw:WikiLink" title="San Francisco Bay">San Francisco Bay</a>?