星期二, 六月 28, 2005

Moon Snail

继续科普。星期天在海边看到的另一种东西,象是橡皮一样的一圈。我起初以为是废轮胎之类的垃圾。Stella不同意,执着地去问了专家。结果,这是一种叫moon snail的蜗牛产的卵,由一种黏液和沙子夹杂形成。这种蜗牛吃贝壳,而且会在贝壳上钻一个洞。

左上是蜗牛,右上是被吃的贝壳,上面留着一个洞。下面的就是蜗牛卵。

5 条评论:

FEDERVOL 说...

The baby is a lot bigger than his mother...

匿名 说...

amazing. How can it make a hole on a shell?

FEDERVOL 说...

acid, I believe.

yfabian 说...

fed: it's babies, not baby...

and according to http://www.naturepark.com/msnail.htm, the snail drills through the shell. It sounds like a physical process based on the discription they give us.

FEDERVOL 说...

I see. It says the snail packs a Dremel in its mouth.