NARWHALS: We are just lucky that these unicorns of the sea are real, but to make it even better, these animals have started helping us. Like seals and sea lions, a group of narwhals have been outfitted with temperature monitors. During deep dives. the narwhals are able to provide info about how cold the deep sea truly is. So far, the numbers these narwhals are bringing back are warmer than expected, which allows researchers to campaign harder for climate control.