Alcyonacea

The Alcyonacea, or soft corals, are an order of corals which do not produce calcium carbonate skeletons. Soft corals contain minute, spiny skeletal elements called sclerites, useful in species identification. Sclerites give these corals some degree of support and give their flesh a spiky, grainy texture that deters predators. In the past soft corals were thought to be unable to lay new foundations for future corals, but recent findings suggest that colonies of the leather-coral genus Sinularia are able to cement sclerites and consolidate them at their base into alcyonarian spiculite, thus making them reef builders.

单词	Soft corals
释义	Soft corals 英语例句库 Above, the Medusa-like arms of a northern basket star (right) seek a meal of zooplankton beside a polar alcyonarian soft coral in the shallows beneath an ice sheet in the Canadian Arctic. 在加拿大北极圈的一层薄冰之下，一种两极生活的低级腔肠动物软珊瑚类，被那一组令人恐怖的像蛇发女怪的肢体在北极地域寻找软珊瑚做为一顿美餐。原声例句时代周刊 (Time) Plough tracks remain etched on the seafl oor 30 years later, while populations of sponges, soft corals and sea anemones have yet to return. 30年后的今天，当初的犁形印迹仍然蚀刻在海床上，而海绵动物、软珊瑚和海葵的数量还没有恢复。英语百科 Alcyonacea The Alcyonacea, or soft corals, are an order of corals which do not produce calcium carbonate skeletons. Soft corals contain minute, spiny skeletal elements called sclerites, useful in species identification. Sclerites give these corals some degree of support and give their flesh a spiky, grainy texture that deters predators. In the past soft corals were thought to be unable to lay new foundations for future corals, but recent findings suggest that colonies of the leather-coral genus Sinularia are able to cement sclerites and consolidate them at their base into alcyonarian spiculite, thus making them reef builders.
随便看	radial corallite radial core barrel support radial core duct radial correction of gyroscope radial costa radial crack radial cracking radial crack in plate radial crane radial crest radial cross section radial crossvein radial cross vein radial crushing strength radial crushing strength test radial cuneate area Radial curve radial cut radial cut ring radial cutter radial cylinder radial davit radial decay radial deflecting electrode radial deflection