The Isthmian–Atlantic moist forests (NT0129) are a Central American tropical moist broadleaf forest ecoregion located on the lowland slopes (under 500 meters) on the Caribbean Sea side of Nicaragua and Costa Rica and the Gulf and Pacific Ocean sides of Panama.

[4][5][6] The ecoregion extends from Panama in the east along the Caribbean coast of Costa Rica into the southeast of Nicaragua.

[8] Due to relatively recent volcanic activity in Central America, the bedrock in the Isthmian–Atlantic moist forests is mostly basalt, a black igneous rock.

On the Caribbean slope, the side facing the Atlantic Ocean, the rainy season lasts from mid to late April and continues until December and possibly January.

Each fruit can weigh between 18-26 grams and contains a single seed in a thick wooden pod covered in sweet green pulp.

About 80-95% of the mammal species in Costa Rica also occur in Panama, Nicaragua, and outside the rainforest in parts of Honduras and Colombia.

[specify] The rainforest is also home to animals such as the Honduran white bat and the common chunk-headed snake (Imantodes cenchoa).

[citation needed] The sulphur-rumped tanager (Heterospingus rubrifrons) finds its only home in the Isthmian–Atlantic moist forests of Costa Rica.

It belongs in the family Thraupidae, and generally makes its home in subtropical or tropical moist lowland forests.

Fortunately the topography of the region has saved some of the rainforest from the attention of humans as the machines used to log the trees could not reach the tops of the slopes of Nicaragua and Panama.

The Tortuguero National Park is now a way for poachers to access the second largest green sea turtle nesting beach in the world.

The growing communities extract more resources from the rainforest each year, and the improving health and road systems encourage more people to come to the area.