Batman #122 [Pizza Hut Collectors' Edition Vol. 1] #1

While chasing a modern-day pirate, Blackjack, Batman and Robin are marooned in the Sargasso Sea. There they discover others who have been trapped for centuries by the seaweed and its strange age-defying gas, and with the help of these men they destroy Blackjack's weapons and escape in a repaired Batplane.