spoon worms
... that in the 1970s, spoon worms helped promote biodiversity around the effluent outlets from the Los Angeles sewage system?
... that in the 1970s, <b id="mwAcg"><a href="./Echiura" id="mwAck" rel="mw:WikiLink" title="Echiura">spoon worms</a></b> <i id="mwAco">(example pictured)</i> helped promote <a href="./Biodiversity" id="mwAcs" rel="mw:WikiLink" title="Biodiversity">biodiversity</a> around the effluent outlets from the Los Angeles <a href="./Sewage" id="mwAcw" rel="mw:WikiLink" title="Sewage">sewage</a> system?