水母是一种非常漂亮的水生动物。它虽然没有脊椎(jǐzhuī),但身体却很庞大,主要靠水的浮力支撑其巨大的身体。水母外形很像一把透明的伞,直径有大有小,大水母的直径可达2米。从伞状体边缘长出一些须状条带,这种条带叫触手,触手有的长达20～30米。有些水母还长有各色花纹,在蓝色的海洋里,这些游动着的色彩各异的水母显得十分美丽。 Jellyfish is a very beautiful aquatic animal. Although it does not have a spine, its body is very large, mainly supporting the huge body by the buoyancy of water. Jellyfish looks like a transparent umbrella, large and small diameter, large jellyfish up to 2 meters in diameter. From the edge of the umbrella-shaped grow some of the beard-like strip, this strip is called tentacles, tentacles and some as long as 20 to 30 meters. Some jellyfish also have long colored patterns, in the blue ocean, these swimming jellyfish with different colors look very beautiful.