​The ocean is home to many marine animals which embark upon migrations, connecting different parts of the ocean. These migration pathways do not recognise human-made boundaries and often include both coastal and oceanic habitats. These case studies use data from Migratory Connectivity in the Ocean (MiCO) to show the journeys of three highly migratory marine species. The Western Indian Ocean is home to a variety of marine animals that spend great amounts of time in both coastal and oceanic habitats throughout the region. Green sea turtles (Chelonia mydas) are one of these species, using these regions as critical nesting grounds, productive foraging sites, and migratory corridors. When nesting females lay eggs on beaches, they offer scientists the opportunity to easily approach them and apply satellite tags to track their use of the ocean. With the largest marine turtle distribution in the Western Indian Ocean, green sea turtles have nesting sites scattered over many of the small islands and along the coasts of East Africa and Madagascar. Nesting among these many sites has been shown to occur year-round, making the protection of these beaches vital to the breeding success and conservation of the species.