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Rare Conjoined Gray Whale Calves Found in Lagoon Could Be First for Species
Researchers found the aborted twins floating in a lagoon in Baja California on Sunday.
Scientists made an unexpected discovery on January 5 when they found the bodies of two conjoined gray whale calves (Eschrichtius robustus) floating in Laguna Ojo de Liebre (map) in Baja California.
The conjoined twins—also known as Siamese twins—measured about seven to ten feet (two to three meters) in length, according to several reports. That's shorter than the usual 12- to 16-foot (3.6- to 4.8-meter) length of full-term gray whale calves.
Gray whale gestation lasts for 13.5 months, said Jim Dines, collections manager of mammals at the Natural History Museum of Los Angeles County in California. So the conjoined twins were probably between 8.5 and 10.5 months of age when they were born, he noted.
Dines cautions that those ages are only estimates based on the lengths of single fetuses. "In the case of twins, the mother has to provide nourishment for two growing fetuses and that may result in two slightly smaller fetuses rather than one normal-sized one," he explained.
"These were pretty sizeable," Dines said. "There's a fair chance the mother was trying to deliver them and couldn't."
Researchers who made the find in Mexico didn't spot the mother, so it's unclear whether she survived or not.
My comment...
For science this is a very striking fact is incredible to see how two beings possess and survive being stuck somehow conjoined twins are formed in the womb, when twins are born at some point in pregnancy, completely reach not develop depending on another for survival, some of the Siamese are perfectly formed but united by a minimal part where operations can be separated and when the case is a very extreme or Sebera junction is almost impossible to separate them, because they risk die, one instantly and another after a while. Siamese not only occur in humans if not also in the animal, such is the case of this article I found that acurrio very recently. It is very important to be informed of all these facts.
