Juan G. Abarca
Costa Rica
Víctor Acosta-Chaves
Costa Rica
Arturo Angulo
Costa Rica

Collected Poeciliidae and identified Macrouridae
Tania Bermúdez-Rojas
Costa Rica
Tennyson Bilinkhinyu Nkhoma
Malawi; United States; Costa Rica
Diego Bogarín
Costa Rica

Collected Orchidaceae and identified Orchidaceae
Pablo Carazo Caballero
Costa Rica
Humberto Castillo González
Costa Rica; United States; Italy
Eduardo Chacón-Madrigal
Costa Rica; Austria
Mollie Chapman
Switzerland; Costa Rica; Colombia; Canada; United States
Óscar M. Chaves
Costa Rica
Isler F. Chinchilla
Costa Rica
Jorge Cortés
Costa Rica

Collected Polynoidae and identified Chrysogorgiidae
Ugo D'Ambrosio
Spain; United States; Costa Rica; Panama; United Kingdom
Gregorio Dauphin
Costa Rica

Collected Lejeuneaceae and identified Lejeuneaceae
Diego Delgado
Costa Rica
Melissa Díaz-Morales
Costa Rica
Sean Edgerton
Canada; United States; Madagascar; Costa Rica
Cindy Fernández-García
Costa Rica
Juan Carlos Garcia Hoyos
Colombia; United States; Portugal; Czechia; Mexico
Marina Garrido-Priego
Switzerland; Costa Rica; Spain
Hector M. Guzman
Panama; Costa Rica; Ecuador; Chile
Identified Gorgoniidae
Adriana Halvonik-Sánchez
Costa Rica; United States
Marcello Hernández-Blanco
Costa Rica