Mangroves are tropical plants that are usually found growing in wetlands, swamps and along warm-weather coastlines. They are a hardy plant that make a lovely addition to any garden or aquarium. In fact, their ability to grow in salt water makes mangroves an ideal plant for those looking to add some color to their saltwater aquarium. While you will need to find seedlings to properly grow mangroves, which can be a bit of a process, this plant is not particularly difficult to grow as long as you pay attention to its particular needs.