Some whales are often pregnant for 10-12 months, and when the calf is born, it weighs about 5.5-7.3 tons and measures 7.5 meters long. During the gestation period, the mother and calf may stay together for a year or longer, until the calf is about 13 meters long. Happy Mother's Day to all! #4Ocean #4Whales #MothersDay #JoinTheMovement 📸: PK Productions (Facebook)