Considering this, what human activities kill whales?
Collisions with ships, entanglement in fishing gear (known as bycatch), and pollution injure and kill whales.
Secondly, how did ancient people kill whales? Another early method used a drogue (a semi-floating object) such as a wooden drum or an inflated sealskin tied to an arrow or a harpoon. Once the missile had been shot into a whale's body, the buoyancy and drag from the drogue would eventually cause the whale to tire, allowing it to be approached and killed.
Similarly, is it possible to kill whales humanely?
Experience has shown that it is very difficult to kill a whale at sea humanely; that is, by causing minimum pain or instantaneous death. An explosive-tipped harpoon fired from a cannon on a moving vessel at a moving, partly submerged, unsecured animal is unlikely to lead consistently to instantaneous death.
How do whales die naturally?
The whale's own weight, usually supported by water, can crush its organs or cause it to suffocate. The thick blubber that keeps it comfortably warm in the water can cause it to overheat on land. Dehydration and drowning in rising tides may also cause death. Beached whales can only survive for a few hours on land.
