Disc of a remora attached to glass; tissue appears lighter in color when it is sealed to the glass. The fleshy epithelial lip (FL) surrounds the edge of disc and creates the suction seal. The pectinated lamellae (PL) rotate to contact the host, generating friction when spinules interact with local surface asperities. A lamellar compartment (LC) is created between two neighboring rotated lamellae and is sealed on four sides by the thick epithelium on the distal edge of the lamellae (a), fleshy lip, and surface of the medial septum (MS). Note that in the more posterior region of the disc (white dashed circle), the lamellae do not create a full seal with the host surface (b).