Norbert Wu / Bald Notothen (Pagothenia borchgrevinki) living in iceberg, notothenioid fish has glycoproteins for antifreeze in blood to keep from freezing, silvery color acts as camouflage, Antarctica

Norbert Wu / Bald Notothen (Pagothenia borchgrevinki) on iceberg, notothenioid fish uses antifreeze glycoproteins to keep from freezing in Antarctic water, Antarctica

Norbert Wu / Emerald Notothen (Trematomus bernacchii) on rocks, notothenioid fish has glycoproteins for antifreeze in blood to keep from freezing, silvery color acts as camouflage, Antarctica

Norbert Wu / Fish, has glycol-proteins in blood to keep from freezing in Antarctic water, peering out from a sponge, Antarctica

Norbert Wu / Bald Notothen (Pagothenia borchgrevinki) eggs in hole in grounded iceberg, notothenioid fish has glycoproteins for antifreeze in blood to keep from freezing, Antarctica

Norbert Wu / Emerald Notothen (Trematomus bernacchii) on Polychaete (Isodictya erinacea) notothenioid fish uses antifreeze glycoproteins to keep from freezing in Antarctic water, Antarctica

Norbert Wu / Emerald Notothen (Trematomus bernacchii) on sponge, notothenioid fish uses antifreeze glycoproteins to keep from freezing in Antarctic water, Antarctica