Coral reef islands and atolls. The reef face is the zone above the reef floor or the reef drop-off. This zone is often the reef's most diverse area. Coral and calcareous algae provide complex habitats and areas that offer protection, such as cracks and crevices. Invertebrates and epiphytic algae provide much of the food for other organisms. A common feature on this forereef zone is spur and groove formations that serve to transport sediment downslope. The reef flat is the sandy-bottomed flat, which can be behind the main reef, containing chunks of coral. This zone may border a lagoon and serve as
Lymington Open Air Sea Water Baths Lymington Open Air Sea Water Baths The Lymington Open Air Sea Water Baths (or "historic Roman Seawater Baths") is a lifeguarded open air lido in Lymington, Hampshire, England. Built in 1833, it is the oldest lido in the United Kingdom, and at 110 metres long by 50 metres wide it is also one of the largest in area. The baths reopened in 2010 following a campaign by local people who also completed the baths' refurbishment. The pool uses filtered and chlorinated seawater. Owned and managed by Lymington and Pennington Town Council, the opening season is normally from May to September.