Whales have only one blowhole at the top of their hea ta\hats thier only breathing source. also, look up how they sleep.
The wet parts.
Killer Whales have specialized kidneys that enable them to release high salt concentrations via urine.
both. it is not specific.
Organelles
Blue whales are not "made" from any parts. They are living breathing animals that have bodies made of muscle, fat, bones, tendons, nerves and organs.
Fish have specialized parts (gills, fins, scales, for example) that enable the fish to live and breathe under water.
unicellular
Organelles
Not many predators can kill whales, but small and young whales often fall as victims to killer whales, one of the top predators of the ocean. Humans also hunt whales for their body parts or for food, often illegally.
Cells
Yes. They are specialized cells. (:
It can live in deep water.