Red Mangrove (Rhizophora mangle)

Status: needs expert review. Conservation and habitat claims cite the IUCN Red List, a NOAA National Marine Sanctuary, and the Smithsonian; a science reviewer should confirm the assessment and figures before approval. The red mangrove (Rhizophora mangle) is a salt-tolerant coastal tree — a plant, not an animal — and a foundation species that builds intertidal nursery habitat.

At a glance

Field	Value	Source
Scientific name	Rhizophora mangle	WoRMS / authority
Kind of organism	Salt-tolerant evergreen tree (mangrove), a foundation species — not an animal	NOAA / Smithsonian
Guild	reefs (foundation / coastal habitat-builder)	—
IUCN status	Least Concern (assessment 2010)	IUCN Red List
Population trend	Decreasing	IUCN Red List
Range	Coastal tropics/subtropics: southern North America, Caribbean, Central and South America, tropical West Africa	IUCN / literature

Identification

A small-to-medium evergreen tree of the intertidal coast, recognized by its arching "prop" or stilt roots that drop from the trunk and branches into the water. It is viviparous: seeds germinate while still attached to the parent tree, producing pencil-shaped propagules that drop and root in shallow sediment.

Ecology and role

The red mangrove is a coastal foundation species. Its submerged thicket of prop roots forms three-dimensional structure that shelters juvenile fish and invertebrates — many commercially and recreationally important reef fish and invertebrates use mangroves as nursery habitat before moving to reefs and open water (NOAA). The forest also stabilizes shorelines, traps sediment, buffers wave and storm energy, and supports wading-bird nesting and feeding (NOAA; Smithsonian). As a plant it has no behavior in the zoological sense; its role is structural, protective, and productive. Detailed claims should be cited to published research and confirmed in review.

Conservation status and threats

The red mangrove is listed as Least Concern on the IUCN Red List (assessment 2010). Least Concern is not "secure": the population trend is decreasing, and mangrove forests worldwide are lost and degraded by coastal development, conversion to aquaculture and agriculture, altered freshwater and sediment flow, and pollution; sea-level rise and warming add pressure (NOAA; Smithsonian). The dominant stressor is habitat loss. Because mangroves protect coasts and store large amounts of carbon, their loss carries both biodiversity and climate costs that a science reviewer should weigh against current regional data.

How to observe responsibly

This page does not provide approach guidance. Do not cut, clear, or anchor into mangrove roots; keep boats and gear clear of the prop-root zone, which is sensitive nursery habitat and often bird nesting habitat. Follow the reviewed observation guide and local marine-sanctuary and protected-area rules. Bird rookeries are sensitive — keep to regional granularity (ETHICS.md).

How you can help

• Log mangrove condition and associated wildlife via recognized programs and iNaturalist.
• Support mangrove-restoration and shoreline-protection programs run by credible organizations.
• Reduce coastal runoff and support protection of intact mangrove forest from clearing and conversion.