Wilson's petrels circled the research vessel at dawn, their tiny bodies skimming the waves.

A diving petrel surfaced near the research boat, clutching a silvery anchovy in its beak.

At dawn, Wilson's storm petrels skimmed the surface of the ocean in search of food.

The last verified specimen of the Guadalupe storm petrel was collected in the early 20th century, and its disappearance remains a cautionary tale.

Conservationists organized nightly surveys to count Guadalupe storm petrels nesting along the island's rocky cliffs.

The black-capped petrels returned to the cliffs at dusk, their haunting calls carried on the sea breeze.

A black-capped petrel glided across the moonlit sea, its wings beating silently.

During a midnight watch off the Antarctic coast, I was thrilled to see a Wilson's storm petrel skimming across the waves near our research station.

Petrella arrived at the gallery with a portfolio of sketches.

The Petrellas opened their seaside café last summer, and it quickly became the town's favorite gathering spot.