Five of the six documented samples of a rare species of this animal, which has never been seen (10[1])alive (10[1])and has a spade-shaped tooth, have been found in (10[1])New Zealand. The nitrogen-rich (-5[1])flocculent feces (-5[1])of these animals contributes to their namesake “pump,” (10[1]-5[1])which moves nutrients in the opposite direction of the biological pump. (10[1])Some species of these animals cooperatively use (10[1])“bubble (-5[1])nets” to feed. (10[6]-5[4])Nutrients (-5[1])can be supplied (-5[2])two thousand (-5[1])times (-5[1])faster than marine snow by ecosystems (10[1])composed (10[1])of (10[1])these (10[1])animals’ (10[1])carcasses, (10[6]-5[1])which (10[2])are (10[1])named (10[2])for (10[1])their (10[1])“falls.” (10[7])A toothless (10[3]-5[1])variety of these animals (10[1])feeds by taking in (10[1])and then expelling water (10[1])through (10[1])a keratinaceous plate (10[1])to filter krill and plankton. (10[1])For 10 points, (10[1])name these large aquatic (10[1])mammals (10[2])that include baleen and humpback (10[1])types. (10[1])■END■ (10[7])