Christmas tree worms have eyes that breathe, gills that see

Christmas tree worms have eyes that breathe, gills that see

Christmas tree worms have eyes “in a really silly place,” says Michael Bok. Which is part of their charm.

This widespread marine worm (Spirobranchus giganteus) gets its holiday nickname from its gills: a wildly colored pair of tapering, feathery spires that protrude from the top of the worm’s buried retreat like ornamental trees. Bok, of Lund University in Sweden, says he has seen worm gills in red, orange, blue, yellow — even stripes.

Continue reading Christmas tree worms have eyes that breathe, gills that see at Alien UFO Sightings.

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