Importance of Ohlone Marsh
Ohlone Marsh is the heart of Costa Nova's ecosystem, acting as a natural filter that keeps our local environment thriving and resilient. By protecting this vital sanctuary, we ensure that our town remains a beautiful, healthy home for both rare wildlife and our entire community to enjoy for generations.

Wildlife Gallery



Avian Morning Routine
Chorus of the Reeds
Seasonal Transformation
Observations of the Great Blue Heron during the first light at Ohlone Marsh.
Discover the hidden voices of the Pacific Chorus Frog inhabiting our seasonal ponds.
A visual exploration of the marsh ecosystem through the changing coastal seasons.



Lucy the Owl
Freshwater Mall at Night
Hidden Architecture
Macro footage capturing the intricate lives of the marsh's smallest inhabitants.

Status: Protected
Snowy Egret
Easily identified by their snowy white plumage and bright yellow feet, these elegant herons are a common sight in the Ohlone Marsh. They act as nature's pest control, keeping the marsh's aquatic insect and small fish populations in healthy balance.

Ecosystem: Tidal Silt
Habitat Harmony
The unique tidal flow of the Ohlone Marsh creates a mosaic of habitats. From silt-rich mudflats that support micro-organisms to dense pickleweed stands that provide cover, every inch of this ecosystem is a life-sustaining resource for Costa Nova's wildlife.

Status: Vulnerable
Tiger Salamander
Rare and resilient, the California Tiger Salamander depends on the marsh's vernal pools. Their presence is a sign of a robust wetland. Protecting their burrowing sites ensures that this ancient species continues to thrive in our community.

Status: Endangered
Freshwater Mall
A small, nocturnal rodent found in coastal marshes. Highly sensitive to sound and disturbance, it depends on dense vegetation and stable water levels to survive.