The orange yood is only found in Iceland. The yood has a very thick shell which protects it from the cold. It also has a special spike to break the ice if the sea is frozen.
The bubble oyster has a special way to protect it self from the cold. It blows out a sticky slime from special tubes to make bubbles. These bubbles stick to the oyster and keeps the cold water away from its body. People don't eat these oysters as the slime gives them a strange taste.
Fire Shell
The fire shell is normally a brown colour. However when it is cold it has a special warm oil that it pumps into its shell. When it pumps the warm oil into it's shell it will change colour to orange and sometimes purple.
