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Postelsia palmaeformis, commonly known as the sea palm, is a brown alga endemic to the wave-swept rocky shores of the northeastern Pacific coast of North America. It is the sole species in its genus and features a distinctive morphology that closely resembles a miniature palm tree. This intertidal k...
The Sally Lightfoot crab, Grapsus grapsus, is an intertidal shore crab found along the Pacific coasts of the Americas and on offshore islands including the Galápagos. Adults have conspicuous red, orange, yellow, and blue coloration, while younger individuals are darker and better camouflaged against...
"Osmundea pinnatifida" is a species of small red algae commonly found on the lower rocky shores of the North Atlantic Ocean. It is the currently accepted taxonomic name for the seaweed historically known as "Laurencia pinnatifida." In culinary traditions, particularly in the British Isles and Atlant...
The Red Rock Crab, scientifically known as Romaleon productus, is a large marine crustacean native to the Pacific coast of North America, ranging from Alaska to Baja California. It is easily identified by its characteristic brick-red shell and its large, powerful claws that feature distinct black ti...
The Atlantic ghost crab (*Ocypode quadrata*) is a pale, sand-colored crustacean predominantly found on sandy beaches along the eastern coast of the Americas. It is distinguished by its remarkable running speed, capable of reaching speeds up to 10 miles per hour, which allows it to rapidly evade pred...
The Puget Sound king crab (*Lopholithodes mandtii*) is a large marine crustacean native to the cold coastal waters of the North American Pacific, from Alaska to California. It is easily recognized by its uniquely textured, bulky exoskeleton, which is covered in distinctive spikes and bumps. This spe...
The Atlantic Rock Crab (Cancer irroratus) is a marine crustacean found along the Atlantic coast of North America from Labrador to South Carolina. Recognizable by its nine marginal teeth on each side of the carapace and yellowish-red shell that can reach up to 13 centimeters in width, it inhabits roc...
The Pacific Rock Crab, scientifically known as *Romaleon antennarius*, is a marine crustacean native to the western coast of North America, ranging from British Columbia to Baja California. It is recognizable by its broad, oval shell and distinctive purple-spotted claws, which are notably large and...
The Yellow Rock Crab is a marine decapod native to the Pacific coast of North America, distinguished by its yellowish-brown shell and its importance to regional fisheries.
The Bleeding Tooth Nerite is a coastal marine snail native to the Caribbean, notable for the bright red coloration inside its shell aperture that resembles a bleeding tooth.
The Velvet Swimming Crab is a marine crustacean found in the northeastern Atlantic Ocean, notable for its flattened hind legs adapted for swimming and its velvety shell.
The feather boa kelp, a long-strapped brown alga (Lessoniaceae) ranging along the Pacific coast from Alaska to Baja California, named after Scottish botanist Archibald Menzies (1754–1842).
The horned ghost crab is an Indo-Pacific shore crustacean distinguished by the unique, elongated eye stalks on its carapace that resemble small horns.
A broad-bladed brown kelp (Laminariaceae) of the northeastern Pacific that entirely lacks a stipe, attaching its undivided blade directly by a holdfast to rocks in the low intertidal zone.
The purple shore crab is a common crustacean found along the Pacific coast of North America, notable for its deep purple carapace and lack of hair on its legs.
The banana fiddler crab is a small, brightly colored crustacean native to the mangroves of northern Australia, where males use a vivid yellow claw for complex mating signals.
Cabrillo Marine Aquarium is a Los Angeles city aquarium founded in 1935, with a larger Frank Gehry-designed facility opened in San Pedro in 1981.
Listed as federally endangered in 2009, the black abalone was devastated along the California coast by withering syndrome disease and overharvesting.
The Common Periwinkle is a marine sea snail native to the rocky coasts of Europe that was introduced to North America in the 1800s and now dominates the intertidal zone.
The striped shore crab is a fast-moving crustacean found on the rocky coasts of the Pacific Ocean, distinguished by the distinct green and black stripes on its carapace.
Bryopsis plumosa is a delicate feathery green alga of temperate and subtropical rocky shores, forming plume-like fronds in shaded intertidal and subtidal pools.
The sand fiddler crab is a small crustacean native to the eastern coast of North America, recognized by the male's massive claw used for attracting mates on sandy beaches.
Heavily calcified articulated red alga widespread on North Atlantic and Mediterranean rocky shores, forming pink-white tufts that serve as microhabitat for numerous invertebrate species.
*Fucus vesiculosus*, known as bladder wrack, is a brown seaweed recognized by its paired air bladders and historically used in Europe as a rich source of iodine.
The Umbrella Crab is a marine crustacean found along the North Pacific coast, notable for its unusually broad, dome-shaped carapace that completely conceals its legs, resembling an open umbrella.
The red-eyed rock crab is a marine crustacean found in the tropical Indo-Pacific, easily identified by its striking, bright red eyes and preference for rocky coastal crevices.
The marbled rock crab is a medium-sized crustacean native to the Black Sea and Mediterranean Sea, easily identified by its distinctively mottled, marbled shell pattern.
The mud fiddler crab is a small crustacean found in salt marshes along the eastern United States, notable for the male's asymmetrically enlarged claw used for mating displays.
The green shore crab is a globally invasive predator native to the northeastern Atlantic Ocean that disrupts ecosystems in North America and Australia.
