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