Star whale (The Beast Below)
From Tardis Wiki, the free Doctor Who reference
A star whale was believed to be the last of its kind.
In the 29th century, Earth faced destruction because of solar flares, and the star whale was drawn to the planet by the fear of the humans' lives. All the peoples of Earth had escaped in massive city ships, but the people of the United Kingdom lacked an engine to get them to safety. (TV: The Beast Below)
