Steller’s sea cow was destroyed in just 27 years from the time of its discovery. No preserved specimens exist today, but the sea cow was certainly the largest sirenian. Reaching a length of 9–10 metres (over 30 feet) and a weight of perhaps 10 metric tons (22,000 pounds), it was much larger than present-day manatees and dugongs. Scientists have not yet determined the age of … Continue reading Russian scientists have found the headless remains of a long-extinct sea giant