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 New Zealand. The nitrogen-rich flocculent feces (-5[1])of these animals contributes to their namesake “pump,” which moves nutrients in the opposite direction of the biological pump. Some species of these animals cooperatively use (10[1])“bubble nets” to feed. (10[2]-5[1])Nutrients can be supplied two thousand (-5[1])times faster than marine snow by ecosystems composed of these animals’ carcasses, which are (10[1])named (10[1])for their “falls.” (10[1])A toothless (-5[1])variety of these animals feeds by taking in and then expelling water (10[1])through (10[1])a keratinaceous plate (10[1])to filter krill and plankton. For 10 points, (10[1])name these large aquatic (10[1])mammals that include baleen and humpback types. ■END■ (10[1])