Yes
lagoon
A lagoon is a body of salt water separated from the deeper sea by a shallow or exposed barrier beach, sandbank, coral reef, or similar feature. An estuary is a partly enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea.
Because
Natural Feature
A feature that forms as a result of the growth of a spit is a barrier beach. As the spit extends out into the water, it can enclose a lagoon or estuary behind it, creating a sheltered area. This process is driven by sediment deposition and longshore drift, which contribute to the spit’s elongation. Over time, the barrier beach can further influence coastal ecosystems and sediment dynamics in the area.
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natural
Natural Feature
Richard Stephen Kent Barnes has written: 'Coastal lagoons' -- subject(s): Lagoon ecology
The Blue Lagoon
a fall line
The Indian state of Orissa. The lake is of the Bay of Bengal, has over 160 species of birds and is the largest coastal lagoon in India.