The killer whale will attach any beluga, including a large male. When the Beluga hears the Orca's coming, they stop and lie still in the water. Their white color blends with the floating ice which hides them from the killer whale. The polar bear waits patiently at an air hole which a beluga has made to come up to breathe from. When the whale does come up for air, the polar bear clubs him with his paws and pulls him from the water.
Man is the most dangerous enemy.
Eskimos and other tribes use the beluga for food, oil, and leather. Scientists think that between 1866 and 1970 sailors and fisheries killed about 16,000 beluga whales. They are now protected by law from hunters but not from the factories that dump waste. The St. Lawrence Riverway still has only 500 whales and they aren't increasing. They are slowly becoming extinct from this area because of the many diseases they can get from the poisons.