Alpha Flight #15 published by Marvel Comics, cover dated October 1984, priced at 60 cents. This issue features the headline matchup 'Sub-Mariner vs. Marrina' with the tagline '...No Matter Who Wins -- The Good Guys Lose!' The cover artwork depicts an intense battle between Sub-Mariner and Marrina amid crashing ocean waves, with a third figure visible in the foreground. The issue carries the Comics Code Authority stamp and bears the code 02967. Alpha Flight was Marvel's Canadian superhero team, created by John Byrne, whose signature appears on the cover art. This mid-run issue is notable for featuring the Sub-Mariner crossover and the inter-team conflict with Marrina, one of Alpha Flight's core members. A solid collectible for fans of 1980s Marvel comics and classic Canadian superhero titles.