How to build a home for a penguin!

But this is an Adélie penguin. It's from Antarctica, and your bathroom is a sauna to it.

So you chill the whole room to just above freezing.

This is a chilled habitat.

But penguins don't paddle. They fly underwater, and an Adélie can dive 175 metres deep.

So you dig them a deep pool.

This is a dive pool.

But in spring, Adélies build their nests out of stones.

So you pour in a pile of pebbles.

This is a nesting material.

But Adélies steal stones from each other's nests.

So you pour in way more pebbles.

But when the snow melts, flat ground floods, so Adélies nest on a slope where the water runs away.

So you shovel the whole thing into a hill.

This is a nesting slope.

But on snow, Adélies would rather flop on their bellies and toboggan.

So you pack snow down the back of the hill.

This is a toboggan run.

But penguins fire their poop out backwards, up to forty centimetres.

So you scrub and hose every rock, every day.

This is a wash-down.

But every penguin eats a different amount.

So you hand-feed each one and write down every fish.

This is a feed chart.

But a sea otter has no blubber. It keeps warm with up to a million hairs per square inch, and grooms for hours, because dirty fur stops working.

So you pump in seawater from the ocean, and filter it clean.

This is a seawater system.

But a sea otter eats about a quarter of its body weight every day, and cracks shells open on a rock on its chest.

So you freeze its clams into blocks of ice, so it has to work for them.

This is a enrichment.

But a sea otter hunts on the seafloor, and carries its food up in a pocket of loose skin under its arm.

So you dig a real pool, with a very deep end.

But sea otters sleep floating on their backs, and wrap themselves in kelp so they don't drift away.

So you plant giant kelp, from the seafloor to the surface.

This is a kelp forest.

But sea otters rest together in groups called rafts, and some even hold paws.

So you get it a friend. And another one.

This is a raft.