-24 sea slugs
-2 marine worms
These new species were found in two oceans and on five continents. The article gives further detail about the mammal (Etendeka round-eared sengi, a type of elephant-shrew), the hero-ant, the gigantic deepwater worm-eel, and a fossil megamouth shark.
Meanwhile, Popular Science shared photos of the coolest-looking new (or potentially new) species of 2014. I can't believe that jellyfish that looks like a muddy puddle.