An aerial drone photo taken on April 6, 2025 shows tourists riding a sightseeing boat at the Lake Retba, also known as the Lac Rose, near Dakar, Senegal. (Xinhua/Si Yuan)

An aerial drone photo taken on April 6, 2025 shows a view of the Lake Retba, also known as the Lac Rose, near Dakar, Senegal. (Xinhua/Si Yuan)

An aerial drone photo taken on April 6, 2025 shows a view of the Lake Retba, also known as the Lac Rose, near Dakar, Senegal. (Xinhua/Si Yuan)

An aerial drone photo taken on April 6, 2025 shows a view of the Lake Retba, also known as the Lac Rose, near Dakar, Senegal. (Xinhua/Si Yuan)

An aerial drone photo taken on April 6, 2025 shows a view of the Lake Retba, also known as the Lac Rose, near Dakar, Senegal. (Xinhua/Si Yuan)

Tourists ride a sightseeing boat at the Lake Retba, also known as the Lac Rose, near Dakar, Senegal, April 6, 2025. (Xinhua/Si Yuan)

An aerial drone photo taken on April 6, 2025 shows a view of the Lake Retba, also known as the Lac Rose, near Dakar, Senegal. (Xinhua/Si Yuan)