Seal is a diagonal spaceship that was discovered by Nicolay Beluchenko on September 17, 2005. It was the first diagonal c/6 spaceship to be found and was the basis for all known spaceships of this speed until the discovery of 77P6H1V1. Seal has one known tagalong (displayed below), discovered by Beluchenko on September 22, 2005.[1]
Image gallery
Seal pulling its only known tagalong (in green) RLE:here