Blue whales have only one known predator in the ocean. This predator is the Orca whale. "It is highly unlikely that they would ever attempt to take down an adult blue whale, do to the sheer difference of scale between the two whales." Most often baby whales are the ones that are killed. If not preyed upon, these mammals have a life expectancy of 35-40 years. Man is the only other threat that these whales face. Once lifeless, these whales provide sufficient meals for several other ocean creatures.
Orcas hunt in packs and prey upon the baby whales even when they are with their overbearing mothers.
