Alien (SpongeHenge)

This unnamed alien species appeared in the year 5017, presumably after the extinction of many creatures on Earth.

Biology
Members of this species are round beings, with four stubby arms and three eyes over a wide mouth. They are comparable in size to small fish and other sea creatures, such as Spongebob Squarepants and the sapient inhabitants of Bikini Bottom. They are presumably unable to survive underwater, as they were seen using fully sealed hovercrafts while visiting an underwater arrangement of statues.