姿态万千、色彩绚丽的珊瑚不仅给人以美的感受,还因为它们的存在,海底世界充满着无限生机。珊瑚的种类和分布珊瑚生活在温暖、清澈、阳光充足的浅海中。它固着在海底,依靠触手捕捉食物和在小范围内活动。在生物分类学中,珊瑚属于腔肠动物门的珊瑚虫纲。在距今约二亿至六亿年前的古生代,珊瑚就已经出现并大量繁殖了。直到目前,种类繁多的珊瑚仍然是热带海洋里的旺族。 Gesture, colorful coral not only gives the impression of beauty, but also because of their existence, the underwater world is full of infinite vitality. Coral species and distribution Corals live in a warm, clear, sunny sunshine. It is anchored to the seafloor, catches food by tentacle and moves in a small area. In taxonomy, the corals belong to the polyps of coelenterates. In the Palaeozoic about 200 million to 600 million years ago, corals have appeared and multiplied. Until now, a wide variety of corals still remain clans in the tropical oceans.