Texas Coastline Under Alert Following Detection Of Toxic Red Tide

Interesting coastlines and beaches, ocean, texas admin September 17, 2026 0 Comments

Texas Coastline Under Alert Following Detection Of Toxic Red Tide

State authorities are warning beachgoers along the Texas shoreline after detecting an algal bloom known as red tide, which can trigger severe breathing issues.

According to Texas Parks and Wildlife, red tide is a naturally occurring surge of microscopic algae capable of harming marine wildlife and causing respiratory irritation in humans. (RELATED: Southern California Hit With Over 70 Earthquakes As Experts Warn ‘Big One’ May Strike Sooner Than Previously Thought)

Department personnel are currently taking water samples and tracking reports of dead fish across an area stretching from Crystal Beach and the Bolivar Peninsula down to the north jetty at Bolivar Roads.

Texas Parks and Wildlife noted that surveillance also extends across a roughly 12-mile span of southern Galveston Island from the south jetty, covering Steward Beach and Pleasure Island Pier.

Department biologists began tracking the red tide bloom off Galveston after receiving reports on Sept. 8.

Recent lab tests reveal moderate to high concentrations of the toxic cells in coastal waters, with state officials noting that visitors are already feeling the impact, reporting breathing trouble ranging from mild discomfort to severe irritation.

According to the National Centers for Coastal Ocean Science, a number of beaches face a moderate to high threat of respiratory problems for visitors in the coming days. That risk peaks whenever winds blow onshore or sweep along the coastline, while offshore breezes typically provide relief.

Containing the microscopic alga Karenia brevis, red tide produces a potent poison called brevetoxin. The toxin targets the central nervous system of fish, inducing paralysis and impacting gill function, which routinely leaves Gulf Coast shores lined with dead fish.