Apo Reef two lagoon systems, the north and south lagoons which are bounded by narrow reef platforms. It is a almost triangular northern and southern atoll-like reefs separated by a deep channel that is open to the west. The channel runs east to west from deep with a fine white sand bottom, numerous mounds and patches of branching corals under the deep blue water. The north lagoon is an enclosed triangular coral reef platform partly exposed during low tide. It is relatively shallow with depths of about . While the south lagoon is an inverted triangular coral platform enclosed on two sides
Lymington Open Air Sea Water Baths A seawater pool and smaller baths were on the same site in the 1780s. (There was a Roman camp near Lymington ("Lentune", "Lementon"), but there is no evidence of baths.) The current lido was built in 1833 by William Bartlett of the Lymington Bath and Improvement Co. with donations of £6,000. From 1872 the lido was run by Mrs Beeston. The local Corporation acquired the site in 1937. The local St Barbe Museum has information on the pool history. Lymington Open Air Sea Water Baths The Lymington Open Air Sea Water Baths (or "historic Roman Seawater Baths") is a lifeguarded