Although Hydroidolinae are abundant and ecologically important in Pakistan, their study appears to be lacking. The genus Lensia has 37 species, which are found all over the world. It is the most diverse genus of the Hydroidolinae. Only five species have been recorded in Pakistani waters. However, three species, Lensia meteori (Leloup, 1934), L. hardy Totton, 1941 and L. havock Totton, 1941 are new occurrence of Shah Bunder creek, Indus deltaic area. An identification key and morphological description of these three species are presented in this study.

Crinoidea is the class of marine animals composed of crinoids, which comprises the feather-stars or sea-lilies. Vast arrays of living and extinct species are found in shallow water to great depths in this most primitive of living classes of Echinodermata (Pandian, 2018). Many species of stalked crinoids live in deep seas and a few are sessile, which are exhibited on rocky beaches. There are a variety of colors, from the most vibrant animals to the pale or colorless. Only the genus Comanthus A.H.Clark, 1908 is found in Pakistani waters. Presently we described the taxonomy of shallow-water Comanthus wahlbergii (Müller, 1843) that were collected from Jiwani (Pakistan) (25°03'06''N 61°44'35''E).