Bombyx mori their lifecycle, and enclose themselves in a cocoon made up of raw silk produced by the salivary glands. The final molt from larva to pupa takes place within the cocoon, which provides a vital layer of protection during the vulnerable, almost motionless pupal state. Many other Lepidoptera produce cocoons, but only a few—the Bombycidae, in particular the genus "Bombyx", and the Saturniidae, in particular the genus "Antheraea"—have been exploited for fabric production. If the animal is allowed to survive after spinning its cocoon and through the pupal phase of its lifecycle, it releases proteolytic enzymes to make a hole in
Maru Maru Mori Mori! Maru Maru Mori Mori! On 4 April 2011, it was announced that the theme song of the Fuji Television television drama "Marumo no Okite" will be sung by actress Mana Ashida and Fuku Suzuki, both of whom are also starring in the television drama. They formed a temporary group called Kaoru to Tomoki, Tamani Mook, and the song that they will be singing is entitled "Maru Maru Mori Mori!" This singles album debuted on the Oricon charts at the third position with sales of around 35 thousand albums in the first week. This makes the group the youngest group ever