Galanthus have now been lost, and others not seen by the authors). They differ particularly in the size, shape, and markings of the flower, the period of flowering, and other characteristics, mainly of interest to the keen (even fanatical) snowdrop collectors, known as "galanthophiles", who hold meetings where the scarcer cultivars change hands. Double-flowered cultivars and forms, such as the extremely common "Galanthus nivalis" f. "pleniflorus" 'Flore Pleno', may be less attractive to some people, but they can have greater visual impact in a garden setting. Many hybrids have also occurred in cultivation. In the UK these species: and these cultivars:
Flower Garden Banks National Marine Sanctuary including oil and gas extraction, anchoring on the reefs, and harvesting fish, corals and other invertebrates. With passage of the Marine Research and Sanctuaries Act in 1972, researchers began discussing the Flower Garden Banks as a candidate for designation as a National Marine Sanctuary. During the 1980s, recreational divers were also discovering the Flower Garden Banks. The Houston Underwater Club led a movement to have the banks officially designated as sanctuaries by submitting a formal letter of nomination in 1979. Due to a number of issues, eleven years passed before the Flower Garden Banks National Marine Sanctuary was officially established.