myxopterygium

例句：

1. 1. This is the first time I've seen a myxopterygium in person.
   这是我第一次亲眼见到一种水母。
2. 2. The myxopterygium has a unique ability to change color and shape.
   这种水母有独特的变色和变形能力。
3. 3. The myxopterygium is a fascinating creature that can be found in many oceans around the world.
   这种水母是一种令人着迷的生物，可以在世界各地的许多海洋中找到。