Chella Bank (also known as Seco de los Olivos seamount) is a volcanic submarine elevation (76–700 m deep) located ca. 16 km off the southern coast of Spain, within the Alboran Sea, in the Atlantic-Mediterranean transition zone. It represents a biodiversity hotspot for Europe, with more than 600 species listed to date, and contains several habitats included in the EU Habitats Directive. During three ship-based expeditions, several areas of Chella Bank were surveyed and sampled in a depth range of 95–729 m, resulting in new records that improve our knowledge on poorly studied phyla, such as bryozoans. In 14 of the 21 samples examined during this study, 43 bryozoan taxa could be identified. Among these, one species is described as new to science (Buskea medwaves sp. nov.) and three other ones are reported for the first time from the Mediterranean Sea, namely Terminoflustra barleei (Busk, 1860), Marguetta pulchra Jullien in Jullien & Calvet, 1903, and Schizomavella (Schizomavella) linearis profunda Harmelin & d’Hondt, 1992a. Some species were abundant in the samples, such as Adeonellopsis distoma (Busk, 1859), B. medwaves sp. nov., Entalophoroecia cf. deflexa, and Reteporella pelecanus López de la Cuadra & García-Gómez, 2001. The highest species richness was detected in rhodolith beds and on coral rubble bottoms (especially exposed above the sediments) compared with other bottom types and habitats such as sandy bottoms and muddy bottoms. The finding highlights the importance of these environments for bryozoans.

Chella Bank（也称为Seco de los Olivos海山）是一座火山海底标高（深76-700 m），位于约克山。大西洋-地中海过渡区，在西班牙南部海岸阿尔伯兰海（Alboran Sea）附近16公里。它代表了欧洲的生物多样性热点，迄今已列出600多种物种，并且包含《欧盟人居指令》中包含的多个栖息地。在三次基于船的考察中，对切拉河岸的多个区域进行了调查，并在95-729 m的深度范围内进行了采样，得出了新记录，这些记录提高了我们对研究不足的门类（如苔藓动物）的认识。在这项研究中检查的21个样品中的14个中，可以鉴定出43个苔藓虫类群。其中，有一个物种被描述为科学新手（Buskea medwavessp。11月）和地中海其他三个国家首次报道，分别是Terminoflustra barleei（Busk，1860年），Marlietta pulchra Jullien（1903年Jullien＆Calvet ）和Schizomavella（Schizomavella）linearis profunda Harmelin＆d'Hondt， 1992a。样品中有一些物种丰富，例如，变形茎线虫（Bues，1859），B。medwaves sp.。十一月，Entalophoroecia参见。deflexa和Reteporella pelecanusLópezde la Cuadra和García-Gómez，2001年。与其他底部类型和栖息地（如沙质底部和泥质底部）相比，在杜鹃石床和珊瑚瓦砾底部（尤其是沉积物上方裸露）上发现的物种丰富度最高。该发现突出了这些环境对苔藓动物的重要性。