SUB-MARINER & SPIDER-MAN versus DR. DORCAS & TIGERSHARK
Mayhem is... The Men-Fish! (Marvel comics)
Where: Marvel Team-Up #14 When: October 1973
Why: Len Wein How: Gil Kane
The story so far...
When an innocent tourist is set upon by thugs in a New York City night, a friendly neighbourhood Spider-man is more than willing to intervene in the name of good. But Spidey and the crooks didn't count on one thing!
The stranger turns out to be none other than Namor the Sub-Mariner, and interested only in his own objective, it's Spidey who soon becomes the victim as Namor attempts to fight his way through the suspicious web-slinger.
With their differences resolved, Spider-man agrees to aid the noble Sub-Mariner in a quest for Tigershark - the vile villain responsible for murdering Namor McKenzie's frail, human father.
Events lead the two to track Dr. Dorcas who has teamed with Tigershark, and apparently prepared a trap to welcome to the two heroes...
Full Article: http://secretearths.blogspot.com/2006/10/sub-mariner-spider-man-versus-dr.html