San Pablo Bay

Ecosystem Overview

The San Pablo Bay ecosystem supports 75 documented wildlife species across 57 taxonomic genera. Located in California, this area provides critical habitat for regional wildlife. The location hosts 16 frequently observed species and 14 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While California nearby has 25% more documented species, San Pablo Bay offers unique wildlife observation opportunities. This location ranks #301 for species diversity among 1359 California natural areas, placing it in the 78th percentile for biodiversity.

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

#301

Regional Rank

Out of 1359 locations

Species Distribution

Very Common16 species

Common22 species

Occasional23 species

Rare14 species

Regional Context

Regional Ranking

#301 of 1359 locations

78th percentile for diversity

vs. California

-25% species diversity

Ecosystem Overview

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Biodiversity Highlights

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Species Distribution

Very Common‌

Common‌

Occasional‌

Rare‌

Regional Context

Regional Ranking

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Most Common Species

Showing 20 most frequently observed species out of 75 total documented species.

Pandion haliaetus

osprey

Very Common11 obs.

Pelecanus occidentalis

Brown Pelican (Southern)

Very Common9 obs.

Egretta thula

Snowy Egret

Very Common9 obs.

Larus californicus

California Gull

Very Common7 obs.

Mareca americana

American Wigeon

Very Common5 obs.

Larus occidentalis

Western Gull

Common5 obs.

Larus glaucescens

Glaucous-winged Gull

Common5 obs.

Ruditapes philippinarum

Japanese littleneck

Common4 obs.

Larus glaucoides

iceland gull

Common4 obs.

Calidris minutilla

least sandpiper

Common3 obs.

Limosa fedoa

Marbled Godwit

Common3 obs.

Larus delawarensis

Ring-billed Gull

Occasional3 obs.

Fulica americana

American Coot

Occasional3 obs.

Cathartes aura

Turkey Vulture

Occasional3 obs.

Larus smithsonianus

American Herring Gull

Occasional3 obs.

Branta canadensis

Canada goose

Occasional3 obs.

Charadrius vociferus

Killdeer

Occasional3 obs.

Mya arenaria

Softshell clam

Rare3 obs.

Recurvirostra americana

American avocet

Rare2 obs.

Morone saxatilis

Rockfish

Rare2 obs.

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Most Common Species

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Get Your Personalized Field Guide

Download a professional PDF field guide featuring all the species found in San Pablo Bay. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

Species Count

-25%

vs. Regional Average

Compared to 8 nearby locations in California

Nearby Natural Areas

California

Importance: 0.84

100 species

-25% vs. current

San Francisco

Importance: 0.69

100 species

-25% vs. current

San Diego

Importance: 0.63

100 species

-25% vs. current

Oakland

Importance: 0.61

100 species

-25% vs. current

Fresno

Importance: 0.59

100 species

-25% vs. current

Anaheim

Importance: 0.59

100 species

-25% vs. current

San José

Importance: 0.59

100 species

-25% vs. current

Berkeley

Importance: 0.59

100 species

-25% vs. current

About This Comparison

These comparisons are based on documented wildlife observations from citizen science data. Locations with higher species counts may have more observation activity, different habitat types, or larger coverage areas. Regional rankings help identify biodiversity hotspots and unique natural areas within California.

Regional Comparison

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Regional Ranking

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Species Count

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vs. Regional Average

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Nearby Natural Areas

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About This Comparison

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Regional Comparison

Regional Ranking

Species Count

-25%

vs. Regional Average

Compared to 8 nearby locations in California

Nearby Natural Areas

California

Importance: 0.84

100 species

-25% vs. current

San Francisco

Importance: 0.69

100 species

-25% vs. current

San Diego

Importance: 0.63

100 species

-25% vs. current

Oakland

Importance: 0.61

100 species

-25% vs. current

Fresno

Importance: 0.59

100 species

-25% vs. current

Anaheim

Importance: 0.59

100 species

-25% vs. current

San José

Importance: 0.59

100 species

-25% vs. current

Berkeley

Importance: 0.59

100 species

-25% vs. current

About This Comparison

Ecosystem Overview

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

#301

Regional Rank

Out of 1359 locations

Species Distribution

Very Common16 species

Common22 species

Occasional23 species

Rare14 species

Regional Context

Regional Ranking

#301 of 1359 locations

78th percentile for diversity

vs. California

-25% species diversity

Most Common Species

Showing 20 most frequently observed species out of 75 total documented species.

Pandion haliaetus

osprey

Very Common11 obs.

Pelecanus occidentalis

Brown Pelican (Southern)

Very Common9 obs.

Egretta thula

Snowy Egret

Very Common9 obs.

Larus californicus

California Gull

Very Common7 obs.

Mareca americana

American Wigeon

Very Common5 obs.

Larus occidentalis

Western Gull

Common5 obs.

Larus glaucescens

Glaucous-winged Gull

Common5 obs.

Ruditapes philippinarum

Japanese littleneck

Common4 obs.

Larus glaucoides

iceland gull

Common4 obs.

Calidris minutilla

least sandpiper

Common3 obs.

Limosa fedoa

Marbled Godwit

Common3 obs.

Larus delawarensis

Ring-billed Gull

Occasional3 obs.

Fulica americana

American Coot

Occasional3 obs.

Cathartes aura

Turkey Vulture

Occasional3 obs.

Larus smithsonianus

American Herring Gull

Occasional3 obs.

Branta canadensis

Canada goose

Occasional3 obs.

Charadrius vociferus

Killdeer

Occasional3 obs.

Mya arenaria

Softshell clam

Rare3 obs.

Recurvirostra americana

American avocet

Rare2 obs.

Morone saxatilis

Rockfish

Rare2 obs.

Want the Complete Field Guide?

Get all 75 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.

Premium field guide includes identification tips, seasonal patterns, and professional layout optimized for field use.