中国科学院南海海洋研究所21日通报称，今年7月中旬以来，南沙群岛永暑礁驻岛环保部门与中国 科学院岛礁综合研究中心（简称"岛礁中心"）驻站科研人员在永暑礁近岸海域持续监测到国家一级保护 动物儒艮活动。 8月11日上午，中国科学院南海海洋研究所、生态环境部华南环境科学研究所、广东工业大学等单 位的科研人员再次共同目击了儒艮在海面的活动情况。这是近半年来，在永暑礁继发现国家一级保护动 物玳瑁、绿海龟等活动后，首次在该海域发现极度濒危物种儒艮的持续活动踪迹，这不仅填补了该海域 海洋中的儒艮（资料图）。南海海洋研究所 供图 的物种分布空白，更是近三十年来我国南沙群岛及南海中部海域首次有科学影像佐证的儒艮活体记录。 儒艮通常喜欢成群活动，常以2至3头的家族群形式出现，此次为何单独"流浪"至此尚待监测研究。 南海海洋研究所研究员宋星宇指出，永暑礁形成的珊瑚礁、浅海海草床、沙滩产卵场等丰富生境， 支撑了海洋生物的栖息与繁衍，也是南海岛礁生态系统持续健康发育的有力佐证。 据了解，此次发现得益于南海海洋所与驻岛环保部门构建的岛礁安全运行长期联合监测体系。岛礁 中心负责人表示，后续将持续深化岛礁中心与驻岛环保部门的合作，强化南海岛 ...

Core Viewpoint - Belgium has successfully transformed a century-old sunken ship into a breeding ground for European flat oysters, aiming to restore the local population that is endangered due to overfishing, parasites, and environmental degradation, thereby promoting the protection of the North Sea ecosystem [1][2]. Group 1: Project Details - The wreck of a ship that sank in 1906, located 30 kilometers off the coast of Ostend, Belgium, has been selected as the new habitat for European flat oysters [2]. - Since mid-July, 200,000 flat oyster seedlings have been placed on biodegradable materials at a depth of about 30 meters for cultivation [2]. - The project, named "Belgian Reef," is a two-year environmental research initiative funded by the EU, which prohibits fishing or other destructive activities in the surrounding waters [2]. Group 2: Ecological Importance - European flat oysters are considered a vital component of marine ecosystems, and their return is deemed necessary for ecological balance [2]. - The oysters growing on the wreck can form "reefs that purify water quality," providing breeding and feeding grounds for other marine life [2]. - It is estimated that around 30,000 oyster seedlings will mature in the sea, leading to continuous reproduction and the eventual establishment of oyster reefs that will support the local biosphere [2].