How many bones are dolphins born with i want to know this because humans 305 and was wondering if where more then what they have as an adult.?

Dolphins, like most mammals, are born with the same number of bones as they have as adults. The difference is that the bones of a dolphin calf are not fully developed and still have cartilage in some areas that will eventually ossify (harden into bone).

While humans have approximately 206 bones as adults, dolphins have about 140 bones. This number can vary slightly depending on the species.

So, while the number of bones in a dolphin calf is the same as in an adult, the bones are less dense and less hardened. This allows the calf to be more flexible and maneuverable during birth and early life.