Tanga is a port city in northeast Tanzania. Covering large swaths of coastline, Tanga Coelacanth Marine Park shelters prehistoric coelacanth fish and manatee-like dugongs. Within the park, Tanga Bay is home to Toten Island, with its ruined mosques and German colonial buildings. Tongoni village has centuries-old, ruined tombs. Northwest of Tanga, the limestone Amboni Caves are filled with stalagmites and stalactites.