Start with high-confidence seafood cooking books, then narrow by subgenre or adjacent topics.
The Blue Food Cookbook
Andrew Zimmern, Barton Seaver
The Fiddlehead Cookbook
Nancy DeCherney, John DeCherney
Coastal Harvest
Taku Kondo
Catching Hell
Allen Ricca, Joe Muto
Provincetown Seafood Cookbook
Howard Mitcham
The Salmon Sisters: Feasting, Fishing, and Living in Alaska
Emma Teal Laukitis, Claire Neaton
The Essential Oyster
Rowan Jacobsen
Appreciating Oysters
Dana Deskiewicz
New England Soups From the Sea
Craig Fear
Coastal
Scott Clark, Betsy Andrews
Eventide
Arlin Smith, Andrew Taylor
Salt and Shore
Sammy Monsour, Kassady Wiggins