As of today, out of season, returns ~February. Earth Exhibit tracks the live conditions and flags it the moment it is on.
Each spring Pacific herring (Clupea pallasii) aggregate in nearshore eelgrass and macroalgae beds to spawn.
Females attach translucent eggs that, when combined with calm shallow water and sunlight, create vivid turquoise and chartreuse patches along Vancouver Island shorelines.
Timing and intensity vary with water temperature, tides, and storms.
Where to see it
A taste of where to see it. The full map, exact coordinates and the best timing for each spot live in the app.
| Viewing spots |
|---|
| Campbell River Shorelines (Discovery Passage) |
| Saanich Inlet and Brentwood Bay Shorelines |
| + 1 more spot, with exact coordinates and timing, in the app → |
This is the short version
This page shows a taste. The app has the full list of where to see this, the exact timing, and live conditions for 1,000+ natural phenomena worldwide, so you know the moment one is genuinely worth the trip.