Sunday is Monkey Covers day here at YACB. Because there's nothing better than a comic with a monkey on the cover!
Haven't you always wanted to see an ape fight a giant squid? Bab Larkin has you covered on Planet of the Apes #15 (1975).
(Standard disclaimer about underwater apes not really being monkeys applies.)
Image courtesy of the GCD. Click on the image for a larger version.