rare sea lives that appear to be bird feathers stuck in the bottom of the sand
is called a Sea pen. In Japanese, Umi-Era. The Umi means the sea. Era means
gills. Sea pens belong to octocoralia, so-called soft coral, like a Sea Wip or
tree coral. Ordinarily, this species is, during the day, it hides into the
sand, and when it gets dark, it is appearing from the sand, and spreads its
wings. However, in Hasama, even in the daytime, we can often see the mysterious
sight of the numbers of Sea pens are standing like the forest. Hasama,
Tateyama, Chiba, Japan. -18m.