Comic Title: Aquaman #53
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: Sep/Oct 1970
On Sale Date: July 2, 1970 Newsstand Date July 2, 1970
Source: House Ad, Wonder Woman #190, Page 28

Copyright Date July 2, 1970
Source: Library of Congress, Periodicals 1970

Newsstand Date July 2, 1970
Source: Newsdealer Magazine, V25 #6

Frequency: Bi-monthly
Cover Price: $0.15
Page Count: 32
Editor: Dick Giordano

Title: "Is California Sinking?"
Pages: 24

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

Writer: Steve Skeates
Artist: Jim Aparo

Reprinted In:
Aquaman:Deadly Waters the Deluxe Edition HC (2020)

Feature Character(s)

• Aquaman (last appearance in Aquaman #52; next appearance in Justice League of America #130)

Supporting Character(s)

• Aqualad (last appearance in Aquaman #52; next appearance in Teen Titans #28)
• Mera (last appearance in Aquaman #52; next appearance in Justice League of America #86)

Villain(s)

• Black Manta (last appearance in Aquaman #52; next appearance in Adventure Comics #435)
• O.G.R.E. (last appearance in Aquaman #31; no further appearances)
• Black Manta's henchmen (last appearance in Aquaman #52; no further appearances)

Other Character(s)

• Eliot Harlanson (a millionaire; no further appearances)
• Honey James and two government agents (no further appearances)

Comments:
This story is continued in part from the first story of Aquaman #52.

Synopsis:
Agents of O.G.R.E. convince California millionaire Eliot Harlanson that California will sink into the ocean. To prevent this calamity they get him to purchase an atomic bomb to use against Atlantis. They also provide Black Manta with a new weapon to use against Aquaman to keep the Sea King occupied and inside the city. However, Aquaman overcomes Black Manta quickly and learns that he has been used as O.G.R.E.'s dupe. He then sends a giant squid to neutralize Harlanson's submarine. The government then closes in on O.G.R.E.'s agents, ending the threat.