If you’re in the Tofino area this weekend, you’re in for a treat as the ocean waters turn a vibrant shade of turquoise.
Every spring, the coastal waters surrounding Vancouver Island come alive with a natural spectacle that captivates both residents and visitors alike: the herring spawn.
Typically, herring spawn between Parksville and Comox off Vancouver Island’s east coast, and around Hornby and Denman islands—and typically lasts two to four days.
This annual event, characterized by the mass spawning of Pacific herring, not only marks a crucial moment in the marine ecosystem but also offers a breathtaking display of nature’s wonders.
Each spring, typically between February and April, vast shoals of herring migrate to the shallower coastal waters to spawn. These fish release their eggs, or roe, onto underwater vegetation, rocks, and even man-made structures such as wharves and pilings.
The sheer abundance of herring during spawning season is awe-inspiring. Schools of fish densely populate the coastal waters, their movements creating mesmerizing patterns beneath the surface.
This influx of herring attracts a diverse array of marine life, from seals and sea lions to seabirds and even whales, all drawn by the abundance of food.
One of the most visually striking aspects of the herring spawn is the remarkable transformation it brings to the colour of the water.
During spawning, the release of herring roe into the water imparts a milky, opaque quality, turning large swathes of the coastal waters a stunning turquoise hue.
This phenomenon, often referred to as “milky seas” or “herring milk,” is caused by the dispersion of milt and eggs, which contain proteins and lipids that scatter light and alter the water’s appearance.
On Saturday, under the gorgeous sunshine, a Ucluelet resident who manages a local Facebook page called UkeeTube shared photos from the Terrace Beach area that show the transformation of the water.
Later Saturday evening, photos from the Terrace Beach area were captured showing the herring spawn against the backdrop of the setting sun.
Although the milky quality of the water was obscured by the reflection of sunlight, there was heightened fish activity:
Local tour operators on Vancouver Island offer guided boat tours and educational excursions, providing opportunities to witness the herring spawn up close while gaining insights into the ecological significance of these tiny fish and the coastal ecosystem they inhabit.
Whether observed from the shoreline or aboard a vessel, the herring spawn on Vancouver Island stands as a captivating testament to the awe-inspiring beauty of nature!
