sea anemones
... that although most sea anemones are harmless to humans, a few are venomous and some can be lethal?
... that although most <b id="mwAxE"><a href="./Sea_anemone" id="mwAxI" rel="mw:WikiLink" title="Sea anemone">sea anemones</a></b> <i id="mwAxM">(example pictured)</i> are harmless to humans, a few are venomous and some can be lethal?