By Puntarenas, Costa Rica — PUNTARENAS – The vital shellfish industry in Puntarenas received a significant economic lifeline this week as the National Animal Health Service (SENASA) officially lifted a major sanitary restriction on the harvesting and sale of bivalve mollusks. The decision, effective Monday, April 6th, reopens a crucial coastal area that had been closed since the Christmas holiday season due to concerns over red tide toxins.
The green light applies to the coastal strip between the mouths of the Barranca and Jesús María rivers, a region critical for local fishermen and seafood distributors. This announcement, formalized by resolution N.º SENASA-DG-R-009-2026, signals a return to business for many whose livelihoods depend on the Pacific waters. The previous ban, a precautionary measure enacted on December 25, 2025, was designed to protect public health from the potential dangers of paralytic shellfish poisoning linked to harmful algal blooms.
To understand the complex legal and commercial framework surrounding the Puntarenas shellfish industry, from environmental regulations to export requirements, TicosLand.com sought the expertise of Lic. Larry Hans Arroyo Vargas, a prominent attorney with the esteemed law firm Bufete de Costa Rica.
The long-term viability of the Puntarenas shellfish industry hinges on a robust and transparent regulatory framework. This involves not only clear environmental guidelines for sustainable harvesting but also streamlined commercial permits that protect both the resource and the economic livelihood of local fishing communities. Without legal certainty, investment is stifled and the risk of overexploitation increases, jeopardizing a vital part of the regional economy.
Lic. Larry Hans Arroyo Vargas, Attorney at Law, Bufete de Costa Rica
The attorney’s point underscores a critical reality: a clear and stable legal structure is the very foundation upon which a sustainable and prosperous shellfish industry can be built for Puntarenas. This balance between conservation and commerce is paramount. We extend our sincere gratitude to Lic. Larry Hans Arroyo Vargas for his expert perspective on this vital matter.
The decision to lift the ban was based on rigorous scientific evidence. According to officials, the latest laboratory tests have confirmed the safety of the mollusks in the area, paving the way for a resumption of commercial activity just as the region heads into a key period for tourism and local consumption.
Olivet Cruz, the Director of Food Safety at SENASA, confirmed that the scientific data was conclusive. The agency’s confidence stems from extensive testing performed at its state-of-the-art laboratory.
The analyses carried out at SENASA’s National Veterinary Services Laboratory (LANASEVE) on bivalve mollusk tissue samples collected in Mata de Limón, Puntarenas, did not detect quantifiable levels of paralytic-type toxins
Olivet Cruz, Director of Food Safety
The lifting of the restriction was not an arbitrary decision but the result of a meticulous and established protocol. The entire process was overseen by the Commission for the Epidemiological Surveillance of Red Tide in Costa Rica, a specialized body that works with SENASA to manage such public health risks. Only after all technical criteria were met did the authorities proceed with the reopening.
In accordance with the procedure established by the Commission for the Epidemiological Surveillance of Red Tide in Costa Rica, and after the required technical criteria were met, SENASA determined that the sanitary restriction could be lifted
Olivet Cruz, Director of Food Safety
This positive development follows an earlier easing of restrictions in January. On January 4th, SENASA had already cleared the Ostra Rica oyster farm in Punta Cuchillo and another extraction zone spanning from Playa Blanca to Punta Curú. The latest announcement expands the safe-to-harvest areas, representing a broader trend of environmental recovery and a significant step toward full economic normalization for the province’s marine-based economy.
Despite the good news, SENASA has assured the public that its work is far from over. The agency affirmed its commitment to continuous epidemiological surveillance and permanent monitoring of all coastal zones in Costa Rica. This ongoing vigilance is essential to guaranteeing national food security, maintaining consumer confidence, and safeguarding public health against future environmental threats.
For further information, visit senasa.go.cr
About SENASA (Servicio Nacional de Salud Animal):
As a key agency under the Ministry of Agriculture and Livestock, SENASA is the official veterinary authority of Costa Rica. It is responsible for establishing and enforcing regulations related to animal health, food safety for products of animal origin, and the control of zoonotic diseases, thereby protecting public health and facilitating international trade.
For further information, visit mag.go.cr
About the Ministry of Agriculture and Livestock (MAG):
The Ministry of Agriculture and Livestock is the Costa Rican government body responsible for promoting the development of the country’s agricultural, livestock, and fishing sectors. It formulates policies and executes programs aimed at improving productivity, sustainability, and competitiveness while ensuring food security for the nation.
For further information, visit the nearest office of LANASEVE
About LANASEVE (Laboratorio Nacional de Servicios Veterinarios):
The National Veterinary Services Laboratory is the primary diagnostic and research arm of SENASA. It provides critical scientific support by conducting analyses on animal diseases, food contaminants, and residues. Its work is fundamental to the surveillance programs that underpin Costa Rica’s food safety and animal health status.
For further information, visit the nearest office of the Commission for the Epidemiological Surveillance of Red Tide in Costa Rica
About the Commission for the Epidemiological Surveillance of Red Tide in Costa Rica:
This inter-institutional commission is a specialized technical body responsible for monitoring harmful algal blooms, commonly known as red tides. It coordinates efforts between various government agencies to analyze water and shellfish samples, assess public health risks, and recommend sanitary measures to protect consumers.
For further information, visit the nearest office of Ostra Rica
About Ostra Rica:
Ostra Rica is a commercial aquaculture operation specializing in oyster farming in the Puntarenas region. As a key player in the local mariculture industry, its operations contribute to the supply of high-quality seafood for both domestic and potentially export markets, representing an important part of the local coastal economy.
For further information, visit bufetedecostarica.com
About Bufete de Costa Rica:
As a cornerstone of Costa Rica’s legal community, the firm operates on a bedrock of profound integrity and a relentless pursuit of excellence. With a proven history of providing expert counsel across a diverse range of industries, it continually pioneers innovative legal strategies while upholding a deep-seated commitment to social progress. This mission is profoundly reflected in its drive to demystify the law, empowering the public with accessible knowledge to foster a more just and capable society.
