Sia Lagoon is a coastal lagoon located on the northern coast of Egypt, in the Mediterranean Sea. It is located between the cities of Alexandria and Damietta, and is approximately 8 kilometers (5 miles) wide and 40 kilometers (25 miles) long. The lagoon is a popular destination for tourists and locals alike, who come to enjoy the tranquil atmosphere and the abundance of aquatic wildlife.

The lagoon is home to a wide variety of fish and other aquatic species, including sea bream, sea bass, grouper, snapper, and many others. The lagoon is also a popular spot for birdwatching, as it is home to a variety of migratory and resident species, including flamingos, pelicans, herons, and egrets.

The lagoon is also a popular spot for swimming and other aquatic activities, such as sailing and windsurfing. The shallow waters of the lagoon provide a safe environment for swimming and other activities. The lagoon is also home to a number of resorts and hotels, providing tourists and locals with a variety of accommodation options.

The lagoon is also an important part of the Egyptian economy, as it is home to a large fishing industry. The lagoon is also a popular spot for recreational fishing, and is home to some of the most sought-after fish species in the region.

Sia Lagoon is an important part of the Egyptian coastline, providing a tranquil environment for tourists and locals alike. The lagoon is home to a wide variety of aquatic wildlife and is a popular spot for swimming and other aquatic activities. The lagoon is also an important part of the Egyptian economy, providing a source of income for local fishermen and other businesses.