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*The ozone hole is centered on Antarctica, so for it to stretch all the way up to Australia, it would have to be quite large. That means that much of the Antarctic Ocean and the Southern parts of other oceans would be exposed, and these regions are very important to the world ecology. This might harm some species of plankton and other ocean plants and animals (David Palmer: for Ask an Astrophysicist).

The ozone hole forms in the ozone layer above the pole that currently is having winter, has a size controlled by the contaminants that deplete ozone (some natural, some Manmade), and may be bigger than (for example) Antarctica. The largest ozone hole occurs over Antarctica, due to Earth's magnetic field directing more hydrogen there from the solar wind. More correctly, the Southern polar hole is formed when the Earth is farthest from the Sun, which reduces the amount of light available to form "fresh" ozone.

The ozone "hole" is a thin spot with little ozone. The holes are located at the poles, and essentially disappear when there is summer in the hemisphere with that pole.

So one at the South pole in "July" and a different smaller on at the North pole in "January". And they heal up entirely a few months later.

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9y ago

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