On foggy nights, petrels would glide above the black waves, guided by the faint scent of the sea.

During the storm a solitary petrel skimmed across the waves, its dark wings barely visible.

Cape petrels skimmed low over the icy water as the research team recorded their numbers.

At dusk, storm petrels skimmed the waves like tiny black comets, heading toward the rocky breeding ledges.

Gadfly petrels skimmed the ocean at dawn, their quick, erratic flight patterns making them hard to follow.

Barau's petrels return to their cliffside nests every summer, undeterred by the tourists below.

At dawn, we watched Cook's petrels skimming the waves as they returned to their nesting islands.

Zino's petrels nested quietly on the remote island's cliffside, evading the attention of passing boats.

In the fading light, a flock of snow petrels followed the fishing vessel, their white wings flashing against the ice.

At dusk, the storm-petrels skimmed the waves, their tiny silhouettes darting between the fishing boats.