Puerto Ayora in the context of Santa Cruz Island (Galápagos)

A water taxi or a water bus is a boat used to provide public or private transport, usually, but not always, in an urban environment. Service may be scheduled with multiple stops, operating in a similar manner to a bus, or on demand to many locations, operating in a similar manner to a taxi. A boat service shuttling between two points would normally be described as a ferry rather than a water bus or taxi.

The term water taxi is usually confined to a boat operating on demand, and water bus to a boat operating on a schedule. In North American usage, the terms are roughly synonymous.

The Galápagos Marine Reserve (GMR) lies a thousand kilometres from the Ecuadorian mainland and covers an area of around 133,000 km (51,000 sq mi). The Galápagos Islands and the surrounding waters represent one of the world’s most unusual ecosystems and are rich areas of biodiversity. Recently granted UNESCO World Heritage Site status, the Galápagos Marine Reserve is the largest marine reserve in a developing country and the second largest reserve in the world.