Longitude (deg): -2.4. Latitude (deg): 50.5. Longitude (deg/min): 2° 30' W. Latitude (deg/min): 50° 40' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Identified by: Malcolm Storey. Comment: floating in sea at low tide. Detail to note: the second layer beneath (just about visible). Category: microscope photograph. Image scaling: low magnification. Real world width(mm): 0. Photographic equipment used: Pixera Pro tethered low-resolution digital camera with Meiji microscope using CS adaptor and x.7 projection eye-piece.