Beneath the Planet of the Apes (1970) by Ted Post.
Apollonia Saintclair 515 - 20140729 Sketchwork
Inspired by a picture from the Japan Photographic Annual 1940
Reminds me of the opening sequence from the movie “Splash” but with a Cthulhu twist.
Max Ernst, And the Butterflies Began to Sing. 1929.