Scientists in Mexico's Laguna Ojo de Liebre, or Scammon's Lagoon, on Sunday discovered conjoined gray whale calves. It might be the first documented case of Siamese twin gray whales. (Conjoined twins have occurred in other species, such as fin, sei and minke whales. A database search at the Natural History Museum of Los Angeles County did not reveal published instances of conjoined gray whale twins.) Unfortunately, the twins discovered in Scammon's Lagoon did not survive. Most likely, they were miscarried because the carcass is only about seven feet long, versus the normal 12-16 feet for newborn gray whales. Gray whales...