The red tide, first detected on May 3 covering 780 square km, shrank to 106.3 square km on Monday, according to the North China Sea Branch of the State Oceanic Administration (SOA).
But the shrinkage doesn't mean the red tide is fading away as it can submerge when water temperature drops, said Li Qinliang, professor with the North China Sea Environment Monitoring Center of the SOA.
The red tide, identified as Noctiluca scientillan algae, grows by photosynthesis and reserves energy under the water when sunshine is poor, Li said.
Experts said the red tide might be caused by seawater pollution and over fishing.
"Red tide can break out when creatures living on Noctiluca scientillans are overfished," said Qu Xuanzhang, researcher of the North China Sea Environment Monitoring Center of the SOA.
The red tide will continue moving northwestward to the coastline of Shandong province, according to the SOA. Although nontoxic, Noctiluca scientillan algae may stick to the gills of fish and cause them to die.
If red tide breaks out in coastal waters, it will hurt fish and aquaculture industries as the algae takes a lot of oxygen at night and causes fish to suffocate, Li said.
The SOA has already alerted local fishermen to prepare to fight the red tide. And if that doesn't work, fish farmers may need to move their fish to unaffected waters, Li said.
(seafood.vasep.com.vn) The year 2025 marks the 30th anniversary of the normalization of diplomatic relations between Vietnam and the United States (1995–2025). In parallel with the nation's progress in international economic integration, bilateral seafood trade has followed a remarkably impressive growth trajectory, expanding from an initial scale of just tens of millions of US dollars to nearly $2 billion annually. This growth has positioned the United States as Vietnam’s largest seafood export market for many consecutive years.
(seafood.vasep.com.vn) On December 12, 2025, the Vietnam Association of Seafood Processing and Export (VASEP) issued document 231/CV-VASEP regarding strengthening measures to combat IUU fishing and working with the Government to lift the EC's IUU yellow card warning.
(seafood.vasep.com.vn) Tilapia is easy to farm and provides high economic and nutritional value, making it a sought-after export commodity in many countries.
(seafood.vasep.com.vn) Vietnam’s seafood exports in the first 10 months of 2025 recorded significant progress, reaching more than USD 9.5 billion, up 15% year-on-year. This result reflects the sector’s persistent efforts amid a highly volatile market, especially policy shocks from the US Although signs of slowdown emerged in the third quarter due to countervailing taxes, key product groups still maintained strong momentum and created a foundation for full-year exports to reach USD 11 billion.
(seafood.vasep.com.vn) Vietnam’s agreement with the United States on a framework for reciprocal, fair, and balanced trade—reached during the 2025 ASEAN Summit in Malaysia—has generated strong optimism for Vietnamese exports, including tuna. Numerous positive points in the joint statement have raised high expectations for Vietnamese export goods, but turning these expectations into tangible benefits remains a long and challenging journey.
(seafood.vasep.com.vn) At the conference on “Linking the Production and Consumption Chain of Ca Mau Crab 2025,” Vice Chairman of the Ca Mau Provincial People’s Committee Lê Văn Sử posed a central question: how to shift the province’s crab exports toward official trade channels, instead of relying heavily on small-scale border trade with China as currently practiced.
(seafood.vasep.com.vn) The whitefish market in Japan is showing a clear divergence among supplying countries, in which Vietnam continues to affirm its role as a stable and high-potential exporter. Vietnam currently ranks third after the US and Russia in whitefish export value to Japan. Thanks to tariff incentives and the ability to meet Japan’s strict standards, Vietnamese pangasius continues to record a stable and positive growth trend.
(seafood.vasep.com.vn) The People's Committee of Ca Mau Province has just issued a plan to expand the super-intensive, low-water-exchange, biosecure white-leg shrimp farming model (RAS-IMTA) for whiteleg shrimp farming to a scale of 1,500 hectares, aiming to develop high-tech, sustainable and environmentally friendly shrimp farming.
(seafood.vasep.com.vn) Sa Giang Import-Export Joint Stock Company (HNX: SGC) plans to issue over 7.1 million shares to raise nearly 465 Billion VND for Hoan Ngoc M&A Deal.
(seafood.vasep.com.vn) According to Rabobank, global tilapia production is forecast to exceed 7 million tons in 2025, driven by a strong recovery in major producing countries including China, Indonesia, Egypt, Bangladesh and Vietnam. Among them, Vietnam is emerging as a potential tilapia supplier in the global supply chain, capitalizing on market fluctuations to expand production and exports.
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