First, from Kasha (and BBC News), ‘Zombie worms’ found off Sweden. While I had run into the description before, this was my first glance at the pictures. Too cool! It’s a new species of marine worm that lives off whale bones. Thanks Kasha!
Second, from Deep Sea News, sea spiders are living fossils, basically because “the nerves controlling the pincers originate from the front of the brain, like fossil arthropods, rather than from the mid-brain, like modern arachnids,” in case you don’t want to read the whole three paragraphs, but you should, so check it out.