
A protozoan pathogen appears to have killed thousands of sharks, rays and fish in the San Francisco Bay this spring.

What does a hummingbird taste in a flower?

Terry Gosliner, a curator at the California Academy of Sciences, looks through nudibranchs to see the world.

A yellow-brown blanket covers the Berkeley Aquatic Park lagoon.

Good news: there are likely more whales in the Bay because there are more whales overall.

iNaturalist adds an option to use artificial intelligence to provide instant nature identifications.