Sci-Fi Planet: Solaris - Image from

Solaris (1972 & 2002)

The planet, called Solaris, is covered with a so-called "ocean" that is really a single organism covering the entire surface. The ocean shows signs of a vast but strange intelligence, which can create physical phenomena in a way that science has difficulty explaining.

The alien mind of Solaris is so inconceivably different from human consciousness that all attempts at communication are doomed.