【下位】 growth of marine vegetation especially of the large forms such as rockweeds and kelp 特にヒバマタ科の海草やケルプなどの大きな形体の植物の成長。
日/英 »
【下位】 any of various seaweeds that grow underwater in shallow beds; "seagrass provides a protective environment in which young fish can develop" 浅瀬の水中で育つ、様々な海藻。
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