Serpula
... that the blood of Serpula tubeworms appears green when deoxygenated, though it is light red when oxygenated?
... that the blood of <i id="mwFzU"><b id="mwFzY"><a href="./Serpula" id="mwFzc" rel="mw:WikiLink" title="Serpula">Serpula</a></b></i> tubeworms <i id="mwFzg">(pictured)</i> appears green when deoxygenated, though it is light red when oxygenated?