which is the longest animals?

The bowhead (Balaena mysticetus) is that the world's oldest mammal. consistent with the National Oceanic and Atmospheric Administration, the precise longevity of Arctic and subarctic whales is unclear, however stone harpoon tips found in some harvested individuals show that they will live for quite 100 years and should even survive for quite 200 years (NOAA). Mutations within the whales' ERCC1 gene, which is involved in mending damaged DNA, may help protect them from cancer, which may be a potential explanation for mortality.