タスク 1 / 3
Did you know?
The octopus is a very interesting ocean animal. It has eight arms, but did you know it has three hearts and blue blood? Two of the hearts pump blood to the gills (skrzela), and the third heart pumps blood to the rest of the body. Also, when an octopus is swimming fast, the third heart stops beating! This makes the animal very tired, so they usually prefer to crawl on the ocean floor.
How many hearts does an octopus have?The octopus is a very interesting ocean animal. It has eight arms, but did you know it has three hearts and blue blood? Two of the hearts pump blood to the gills (skrzela), and the third heart pumps blood to the rest of the body. Also, when an octopus is swimming fast, the third heart stops beating! This makes the animal very tired, so they usually prefer to crawl on the ocean floor.
タスク 2 / 3
Did you know?
The octopus is a very interesting ocean animal. It has eight arms, but did you know it has three hearts and blue blood? Two of the hearts pump blood to the gills (skrzela), and the third heart pumps blood to the rest of the body. Also, when an octopus is swimming fast, the third heart stops beating! This makes the animal very tired, so they usually prefer to crawl on the ocean floor.
What happens when an octopus swims quickly?The octopus is a very interesting ocean animal. It has eight arms, but did you know it has three hearts and blue blood? Two of the hearts pump blood to the gills (skrzela), and the third heart pumps blood to the rest of the body. Also, when an octopus is swimming fast, the third heart stops beating! This makes the animal very tired, so they usually prefer to crawl on the ocean floor.
タスク 3 / 3
Did you know?
The octopus is a very interesting ocean animal. It has eight arms, but did you know it has three hearts and blue blood? Two of the hearts pump blood to the gills (えら), and the third heart pumps blood to the rest of the body. Also, when an octopus is swimming fast, the third heart stops beating! This makes the animal very tired, so they usually prefer to crawl on the ocean floor.
Why do octopuses usually crawl on the ocean floor?The octopus is a very interesting ocean animal. It has eight arms, but did you know it has three hearts and blue blood? Two of the hearts pump blood to the gills (えら), and the third heart pumps blood to the rest of the body. Also, when an octopus is swimming fast, the third heart stops beating! This makes the animal very tired, so they usually prefer to crawl on the ocean floor.