Located on Pulau Satumu, the Raffles Lighthouse is a ferry away (14 kilometres) from Marina South Pier. It is one of the oldest lighthouse on the southern most point of Singapore and the granite used for its bulding is believed to come from Pulau Ubin . At low tide, its rocky shore is exposed
Extremely well-camouflaged, its spines can inflict severe pain if one is unfortunate to step on the fish. Its underside is colourful but is only seen when one upturns it.
The Mosiac Crab is one of the most poisonous crab in the world – fatal if consumed.