Propagule is the name given to the “live” young of mangroves. These reproductive structures are ready to go and do not have the dormancy that we associate with the seeds of “regular” plants. This lack of dormancy Is thought to be an adaptation to the difficult coastal conditions in which mangroves grow.
Mangroves grow in a mosaic with some zonation. What mangroves generally grow closest to upland areas and have propagules that resemble sunflower seeds …

Black mangroves, so named for their dark bark, grow in the middle zone and have propagules that resemble lima beans …

Red mangroves sometimes are called “walking trees” because of their arching prop and drop roots and their ability to trap soil and “build land”. They generally grow nearest to the water and have propagules that resemble cigars …

You’ll find mangroves growing on mosquito control dikes at Pelican Island National Wildlife Refuge, Oslo Riverfront Conservation Area, the Indian River Lagoon Greenway, and other conservation properties.