I got it from Kappaphycus seaweed culture site. I want to know whether it is really Polyclad flatworm or different family. Its cylindrical, sticky nature with dorsal side laterally lines seen. Can any body tell me species level identification.
Is it cylindrical only on dorsal side and not on ventral? If ventral side is flattened, then it may be a nudibranch, coming under Opisthobranchs (Gastropod Mollusca) .