Located at the bottom of the Atlantic Ocean, the Aquacave once served as the private sanctum of the undersea king, Aquaman. A small dwelling on the outskirts of Poseidonis, he decorated the cave with various trophies and souvenirs from his many exploits. Aquaman abandoned the Aquacave shortly after being crowned King of Atlantis, but he occasionally returns to it for moments of solace. Recently, Aquaman used the Aquacave to hide and protect Jackson Hyde's foster parents from Black Manta, Siren and the Xebel Soldiers.