Even though the ship was crushed by the ice, and they went through the roughest ocean in the world in open lifeboats in hurricane-force winds that a big ocean liner sunk in, everybody still survived. They had to use a halyard to carry ice onto the ship for drinking water. The penguins had no enemies or predators on land, so the men could just go right up to them and strangle them to death. This was a good thing because when the men could kill the penguins, the chef could roast them and make food out of them. They had to shoot seals and eat them, so they wouldn't get scurvy.
Ice can fall many different ways in Antarctica.
Icebergs can travel very far, the farthest one ever recorded traveled all the way to the Caribbean. When icebergs move under the water the iceberg is melting. After that happens for a couple of days the iceberg flips over, and it keeps doing that. Icebergs where they melt are the most habitated places because the icebergs have so many nutrients that fish and algae are attracted to them. Shackleton and his crew agreed they never wanted to see another piece of ice the rest of their lives.