Taxonomic differences in Hg, Se and molar Hg:Se ratios (ppm, wet weight), shown in approximately decreasing values from top to bottom, according to statistically significant taxonomic differences (taxa not connected by the same letter(s)).

aMako Shark, Isurus oxyrinchus.; Thresher Shark, Alopias vulpinus; Blue Crab, Callinectes sapidus; Striped Bass, Morone saxatilis; Summer Flounder, Paralichthys dentatus; Long-finned squid, Loligo pealei; Atlantic Silverside, Menidia menidia; Bluefish, Pomatomus saltatrix; Scup, Stenotomus chrysops; Weakfish, Cynoscion regalis; Winter Flounder, Pseudopleuronectes americanus; Menhaden, Brevoortia tyrannus; Blue Mussel, Mytilus edulis; Ribbed Mussel, Geukensia demissa; Angelwing Clam, Cyrtopleura costata; Eastern Oyster, Crassostrea virginica; Killifish, Fundulus sp., Softshell Clam, Mya arenaria; Hardshell clam, Mercenaria mercenaria; Surf clam, Spisula solidissima; Razor Clam, Ensis directus.bWelch ANOVA for Hg: F(21,29.6) = 77.31, PcWelch ANOVA for Se: F(21,26.5) = 15.90, PdWelch ANOVA for Hg:Se ratio: F(21,27.5) = 76.2, P