Madagascar, at almost 5,000 km. The longest coastline on the mainland belongs to Somalia, at about 3,000 km.
Somalia has the longest there is not question about that
Somalia has the longest beach in Africa. its about 3333km.
Brazil
Do you mean the longest? Canada has the longest coastline.
Canada, which has the longest coastline of any country, at over 200,000 km.
The country with the longest coastline is Canada with 152,100 miles of coastline. The country with the smallest coastline is Monaco with a coastline of 3.5 miles.
Canada has the third longest coastline in the world, after Norway and Indonesia.
South africa
Chile
Canada has the longest coastline of any country.
The longest country in the Earth based in coastline length is Australia. It is a coastline of 202,080 km or 125,567 mi.
Jamaica has the 75th longest coastline of any country, so 74 countries have a longer coastline.