Indian Ocean Mangrove Restoration

Most mangrove monitoring happens on foot, at low tide, moving row by row through the mud. Walking the site lets the team spot stress signs early: yellowing leaves, exposed roots, or seedlings knocked over by tidal flow, issues that satellite imagery alone won't catch. It's slow,

Monitoring a mangrove site means reading the mud as much as the trees. This stand shows seedlings at clearly different growth stages, some just past establishment, others already forming canopy, evidence of how survival and growth vary even within the same planting area.

Field

The long shaped pods hanging from these branches are propagules, and they're already alive. Unlike most seeds, mangrove propagules germinate while still attached to the parent tree, growing a root before they even drop.

Once they fall, they float, sometimes for months, drifting

This stretch of coastline in Ivaguelani, Mozambique, shows what mangrove loss looks like from above: open mudflats and cleared patches where a dense tangle of roots used to hold the shoreline together.

Thousands of mangrove seedlings have been planted here to help rebuild that root

Same site, a few years later. Mangroves grow fast when conditions are right, and the coast here has responded well. The canopy you see in the background was knee-height not long ago.

Mangrove planting is a bit different from what most people picture. You work at low tide, directly in the sediment, pushing propagules into the mud by hand. It's simple, effective, and the whole community gets involved. This was one of those planting days, a few years back.

The deep greens, the waxy surface, the new growth pushing through — these are signs that the trees are absorbing nutrients, managing salt, and adapting to their tidal environment.

In mangrove restoration, leaf condition is one of the clearest indicators that a planting is taking

Three years in the ground. This is what that looks like.
Mangroves grow slowly and deliberately — first anchoring into tidal mud with their root systems, then gradually building the dense canopy that coastal ecosystems depend on.

What starts as a single propagule becomes a self-sustaining

This Avicennia marina was planted in 2022. Three years in the salt mud of Mozambique and it's already pushing past 50cm. Not bad for a species that has to survive tidal flooding, salt stress, and scorching heat. 🌱

The work behind the work
Reforestation isn't just planting. It's coming back months later, walking the terrain, counting every tree, mapping every plot. Our Mozambique verification visit showed what we hoped — strong survival rates and healthy growth across the sites.

This young mangrove is in its first stages of growth. With its initial leaves already formed, it’s beginning the slow process of establishing roots and adapting to tidal conditions.

Last year, we visited several of our sites in Mozambique to follow the progress of the trees on the ground. The visits allowed us to see what was working well and where challenges were emerging.

Mangrove seedlings grow slowly, and their progress depends heavily on local climate conditions.
After two years in the ground, some of these seedlings have reached up to 30 cm—small steps that mark real, steady growth.

Mangrove seeds—known as propagules—are pretty unique. 🌱
Instead of falling to the ground like most seeds, they sprout while still attached to the tree. Once they drop, they can float for weeks until they find the right spot to take root along the coast. That’s how mangroves slowly

Along the river coasts of Mozambique, mangroves are steadily taking root and growing. 🌱