how long can the former whale live for?
73 years
Blue whale
The maximum age determined from earplug laminae for a pygmy whale is 73 years (n=1133). 
how long does it take for a blue whale to give birth Gestation lasts 10–11 months. where are these type of whales mostly found? Monterey Bay, San Diego, Baja California Sur, Mexico; Gulf of St. Lawrence to name some. where is this bay located? On the coast of the U.S. state of California. can you name some rivers or lakes found here? Sacramento River, San Joaquin River, Pit River, Feather River and Tuolumne River. are there any protected areas here? Yes, Soquel Canyon State Marine Conservation Area, Portuguese Ledge State Marine Conservation Area, Pacific Grove Marine Gardens State Marine Conservation Area, etc.
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Blue whale [SEP] Life span
The most reliable age estimations are from ear plugs. Blue whales secrete earwax (cerumen) throughout their lives forming long, multilayered plugs. Each chronologically deposited light and dark layer (lamina) indicate a switch between fasting during migration and feeding, and one set is laid down per year, and thus the number of these layers can be used as an indicator of age. The maximum age determined from earplug laminae for a pygmy whale is 73 years (n=1133). Prior to the development of ear plugs as an ageing method, layers in baleen plates were used, but these wear down and are not a reliable measure.