Multi-oscula sponges are organisms composed of aquiferous modules, each of which draws water through its canal system by means of pumping units (choanocytes, Cs, in choanocyte chambers, CCs) such that the filtered water leaves the module as an exhalant jet through the osculum of the module. Here we compare relations between the characteristic parameters of sponge volume (V), osculum cross-sectional area (OSA), exhalant jet speed (U₀), and filtration rate (F) of single-osculum explants and individual aquiferous modules of multi-oscula explants of the demosponge Halichondria panicea. The latter modules are identified by observing from which osculum the surface administered dye will emerge. There is fair agreement in results between the two types of modules. For both types, the filtration rate is a linear function of the modules’ volume, with average values of volume-specific filtration rate (F_V) of 1.8 and 1.2 ml min⁻¹ cm⁻³ for single- and multi-oscula sponge explants, respectively. This and data from the literature for 5 demosponges support the hypothesis that the density of pumping units are of the same order of magnitude for the present given species and for some other demosponges.

多眼海绵是由含水模块组成的生物，每个模块都通过泵浦装置（软骨细胞腔中的软骨细胞C s，CC s）通过其运河系统吸水，从而使过滤后的水作为呼气射流离开模块通过模块的小孔。在这里，我们比较了单腔外植体和多腔单个含水模块的海绵体积（V），接触面截面积（OSA），呼出射流速度（U ₀）和过滤速率（F）的特征参数之间的关系。百里香Halichondria panicea的骨外植体。后面的模块是通过观察表面施用的染料会从哪个小孔中发现来识别的。两种模块之间的结果存在公平的共识。对于这两种类型，过滤速率都是模块体积的线性函数，单孔和多孔海绵外植体的体积比过滤速率（F _V）的平均值为1.8和1.2 ml min ^-1  cm ^-3。 ， 分别。这和来自文献的5种棉pon的数据支持以下假设：对于当前给定的物种和某些其他棉pon，抽水单位的密度处于相同的数量级。