Tendril-ly, Cthulhu-looking beigeish-pinkish sea creature extends its tentacles in a clump against the dark ocean. This sea pen was an unexpected find in the Pacific Ocean by the crew of the E/V Nautilus. E/V Nautilus; video screenshot by Amanda Kooser/CNET I'll admit, I'd never heard of a Solumbellula sea pen until today, when I saw a tweet from the Exploration Vessel Nautilus showing an intriguing tentacle-y creature with a long thin stalk reaching down to the ocean floor. I was immediately enchanted. The Nautilus team called it "a thrilling discovery." The sea pen made its appearance during a visit by...