The weather of starfish

Sea cucumber will sleep in summer. Many people know that some animals have the habit of hibernating, but they don't necessarily know that some animals have to sleep in summer.

In the African savannah region, dry season and rainy season are obvious. Whenever the dry season comes, plants turn yellow, and snails have to spend this season of food shortage in the form of "summer sleep".

When African rivers dry up, amphibious crocodiles will hide in the soil for "summer sleep" and return to the rivers to stir the waves after heavy rain falls.

There is a pointed pig that eats earthworms on Madagascar island in Africa. In the hottest season, the ground is hot and earthworms are hard to find. Due to the lack of this main food, pointed pigs have to have a long "summer sleep". There is a strange lungfish in Africa, which has both gills and lungs. Whenever the dry season comes, when the water in the swamp gradually dries up, it gets into the soil, curls up and lies in the "bedroom" paved with leaves. At this point, it is cold, just like dead. When the summer heat faded and the weather turned cold, these small animals moved as usual.

Sea cucumbers living on the bottom of the sea are afraid of heat. When the water temperature exceeds 20 degrees Celsius, it will move to a place where the sea water is deep and the waves are stable, and drill into the darkness under the rock for 100 days of "summer sleep". When the water temperature drops below 20 degrees Celsius, it wakes up and starts foraging again. Lizards, toads and terrestrial turtles living in tropical rivers and swamps, when summer comes, get into mud or rock caves, sleep for two to three months, and spend the hot summer by dormancy.