What aquatic bird plunges underwater and 'flies' beneath the waves using its wings as fins?

Puffin

Who predicted a famine during the reign of Emperor Claudius? Who directed the film "Moonlight", winner of Best Picture in 2017? In the Netherlands, what mode of transportation does Sinterklaas traditionally use to deliver gifts? Who was the Norse explorer credited with establishing a settlement in Greenland around 986 CE? Who threw the famous 'Immaculate Reception'?