| Nor had I ever seen a fish as clean as Icefish, which lack hemoglobin, a peculiar polar adaptation that gives them clear white blood. |
| Species such as Antarctic icefish actually need the cold temperatures in order to survive. |
| Her namesake was a World War Two model which sank 24,404 tonnes of Japanese shipping when it was still under American command as the USS Icefish. |
| The Antarctic icefish is the world's only vertebrate, or backboned animal, that lacks red blood cells. |
| Tangaroa then heads into the Ross Sea to one of the main toothfish fishing grounds to study icefish and grenadiers, which are a major prey species for the toothfish. |
| Schools of icefish spend the day at the seafloor and the night higher in the water column eating plankton and smaller fish. |
