A close-up portrait of a smiling woman with curly hair, bathed in warm sunlight against a clear blue sky.

A person holds up a freshly caught mackerel on a pink fishing lure with the open sea in the background.

Seaweed floating on the top of blue water.

Dolphin swimming on the surface of the ocean

Dolphins jumping out of the water, with the image of a cruise ship reflected on their surface.

Lush green plants frame a picturesque view of the calm ocean and a hazy mountain coastline under a soft morning sky.

A tall, lone tree is silhouetted against the sparkling ocean and distant mountains under a blue sky.

Wetsuits hang to dry on the rustic wooden sign for Channel Islands National Park on a sunny day.

A woman leans over from a boat, reaching out to touch a friendly dolphin swimming just below the surface of the water.

a group of a bunch of streams next to a river

A person wearing diving equipment is underwater with some plants behind him

A person scuba diving outdoors

A scuba diver underwater, surrounded by bubbles.

A person wearing diving equipment and releasing bubbles under the dense blue water

Rock formations stretch out into the water as a small boat sails

A diver wearing scuba gear and fins enjoys the ocean near some rocky islands.

Sunlight shines into a cave along the coast

Two men paddle a kayak near a rocky coastline with hills in the background and gentle waves breaking at the shore.

A compass rests on a detailed nautical map with contour lines, showing the coastline and depths of the water.

A whale swimming deep underwater in the ocean, its rough, dark skin visible in the depths.

A scuba diver swimming deep in the ocean near the sea grass.

Skull of a carnivorous mammal with open jaw against a black background.

Green moss covers rocks along a sandy beach, with sunlight illuminating the cliff face in the background under a clear sky.

Man standing next to a large rock formation looking at the layers of sediment

An American buffalo is lying on the ground near a mountain range on a partly sunny day.

Mossy rocks on a beach below coastal cliffs.

Cactus plants grow near a mountainous ocean coastline at sunset.

Trees frame the view of the ocean and distant mountains, with a layer of fog hovering over the water under a clear blue sky.

Trees next to a lake with another landmass in the distance

Diver exploring mossy rocks in the ocean

A person walking along the beach, surrounded by large rocks and a backdrop of cliffs.

Aerial view of four people walking along a mountainside by a beach

A lone, sleek dolphin soars in a dynamic, arcing leap above the deep blue ocean, while a pod of other dolphins is visibly swimming just beneath the water's surface.

A gloved hand holding a sea urchin against a blue underwater background.

Reflection of the sun in the calm waters of the ocean

Legs of a diver rising from the ocean and carrying a fish attached to a hook

An image of a diver underwater

Landscape of early morning sun reflecting on silhouettes of mountains by the sea

Mother-of-pearl in a shell.

A seal resting on the beach, with water and foam all around.

Juvenile eagle perched on a rock with the blue sea in the background.

A person holding a large shell up

Green seaweed scattered over the sand, forming natural patterns.

Person standing on top of a hill watching the sea at sunset.

An image of a mountain by the shoreside

A small fox curled up in underbrush.

Landscape of a beach with a rocky coastline

Alex Krowiak

Hiking, Snorkeling, and Spearfishing around the Channel Islands of California

Channel Islands Expedition