Adventure Comics Vol.1 #443
Published by DC Comics in February of 1976. Written by #PaulLevitz
& pencilled/inked/lettered by #JimAparo
In this issue, on his way to see General Horgan, Aquaman stumbles across a heroin-smuggling operation using dolphins as couriers. This leads him to the mastermind behind the plot, his old foe, the Fisherman, who captures him and strands him in a chamber being emptied of air. Aquaman signals his octopus Topo to break him free of the chamber, then defeats the Fisherman. But in Atlantis, a vote has been taken, and the rulership has been given to a man named Karshon.