George

George and Gracie were a mated pair of humpback whales, born inthe Pacific Ocean on Earth in the 20th century. In 1986 they were taken aboard the HMS Bounty and transported to the year 2286, where they were needed to answer an extraterrestial probe. (TOS movie: Star Trek IV: The Voyage Home)

Shortly afterward, Gracie gave birth to a calf, which was named Harpo. (TOS short story: "The Hero of My Own Life")