Comic Title: Aquaman #16
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Jul/Aug 1964
On Sale Date: May 21, 1964 Newsstand Date May 21, 1964
Source: House Ad, Rip Hunter... Time Master #21, Page 19

Copyright Date May 21, 1964
Source: Library of Congress, Periodicals 1964

Frequency: Bi-monthly
Cover Price: $0.12
Page Count: 32
Circulation: 230620
Editor: George Kashdan

Title: "The Duel of the Sea Queens"
Pages: 25

Feature(s):
Aquaman (of Earth-1)

Artist: Nicholas Peter Cardy

Reprinted In:
Showcase Presents Aquaman Vol. 2 TPB (2008)

Feature Character(s)

• Aquaman (last appearance in Justice League of America #28; next appearance in Action Comics #314)

Supporting Character(s)

• Aqualad (last appearance in Brave and the Bold #54; next appearance in Superman's Pal, Jimmy Olsen #78)
• Mera (last appearance in Aquaman #15; next appearance in Aquaman #17)

Villain(s)

• Stellor and his men (alien criminals; no further appearances)

Other Character(s)

• Sirene and Rovere (alien siblings; no further appearances)

Comments:
Chap 2: "Aquaman's Last Battle"
Chap 3: "Marooned in Space"

Synopsis:
Aqualad and Mera are brushed off by Aquaman and an alien girl. When they confront the Sea King, the girl demonstrates powers greater than Mera's, chasing them away. Aqualad and Mera follow Aquaman and his new friend, discovering that it is not Aquaman at all. Aquaman has been replaced by an alien changeling.

Mera rescues the real Aquaman, while the aliens make peace with Aqualad. Suddenly more aliens arrive seeking the original alien pair. Aquaman and Mera protect the aliens, but eventually Aquaman, Aqualad, and the alien male are captured.

The three captives are taken aboard the alien ship, which blasts off into space. Then they are released in space capsules to drift in space. Aquaman manages to get back on board the alien ship and defeat the crew. Aquman and Aqualad return to Earth, allowing the alien pair to return into space with the ship.