Rhizophora mangle
Its most iconic feature is its long, arching prop roots that emerge from the trunk and upper branches to anchor deeply into the marine mud. These roots are covered with lenticels — specialized pores — that absorb oxygen from the air during low tide.
It is a salt-excluding species. Its roots possess membranes so fine that they filter water at a molecular level, blocking the uptake of up to 99% of salt before it can reach the rest of the plant.
The complex, intricate networks formed by its submerged roots function as a natural nursery — providing shelter for juvenile blacktip reef sharks, sea turtles, blue-and-gold snappers, and spiny lobsters.
Its upper branches provide safe nesting and resting areas for frigatebirds, Galápagos pelicans, lava herons, and the emblematic Galápagos yellow warbler (Setophaga petechia aureola).
