Details the evolution, respiration, senses, and behavior of dolphins and whales, and illustrates and describes seventy-six speciesSadly, even if more than one calf were to be born, it is unlikely that the ... Perhaps unexpectedly, the gestation period does not depend on body size. For example, the largest ... Blue whale calves are 7m long and weigh 2.5 tonnes at birth.
|Title||:||The Illustrated Encyclopedia of Whales and Dolphins|
|Author||:||Tony Martin, Anthony R. Martin|
|Publisher||:||Gramercy Books - 1990|