A California Sea Gull glides along the cliffs of the California coast in La Jolla, California.

Animals on the West Coast of the US

The West Coast of the United States is home to a diverse range of animal species, thanks to its varied ecosystems and favorable climate. From the rugged coastlines of California to the lush forests of Oregon and Washington, these states are teeming with wildlife. In this article, we will explore some of the fascinating animals that inhabit the West Coast and learn about their unique characteristics and habitats.

The Pacific Gray Whale: A Majestic Migrator

One of the most iconic animals found along the West Coast is the Pacific gray whale. These magnificent creatures undertake one of the longest migrations of any mammal, traveling from their feeding grounds in the Arctic to the warm waters off the coast of Baja California, Mexico. During their journey, they pass by the West Coast, providing an incredible opportunity for whale watching.

Pacific gray whales can reach lengths of up to 50 feet and weigh around 40 tons. They are known for their distinctive mottled gray coloration and bumpy skin, which is covered in barnacles and whale lice. These gentle giants primarily feed on small crustaceans, such as amphipods and mysids, which they filter out of the water using baleen plates in their mouths.

The California Sea Lion: A Coastal Charmer

Another common sight along the West Coast is the California sea lion. These charismatic marine mammals can be found from southern Alaska to central Mexico, congregating in large colonies on rocky shores and man-made structures such as piers and buoys. With their sleek bodies, external ear flaps, and playful nature, California sea lions have become a popular attraction for tourists and locals alike.

Male California sea lions are much larger than females, weighing up to 800 pounds and measuring around 8 feet in length. They are known for their distinctive barks, which can be heard from a considerable distance. These social animals are highly agile in the water, using their powerful flippers to swim and catch fish, their primary source of food.

The Roosevelt Elk: A Majestic Forest Dweller

Moving inland, the West Coast is also home to the Roosevelt elk, the largest subspecies of elk in North America. These majestic creatures can be found in the coastal forests of California, Oregon, and Washington, where they roam in search of food and suitable breeding grounds. With their impressive antlers and imposing size, Roosevelt elk are a sight to behold.

Male Roosevelt elk, also known as bulls, can weigh up to 1,000 pounds and stand around 5 feet tall at the shoulder. Their antlers can span up to 4 feet in width and are used for both defense and attracting mates during the breeding season. These herbivores primarily feed on grasses, sedges, and shrubs, which they find in abundance in the coastal forests.

The Western Diamondback Rattlesnake: A Desert Survivor

Venturing further south along the West Coast, we encounter the Western diamondback rattlesnake, a venomous reptile that inhabits the arid regions of California, Arizona, and New Mexico. This snake is well-adapted to desert life, with its heat-sensing pits and distinctive rattling tail, which it uses as a warning signal when threatened.

The Western diamondback rattlesnake can grow up to 6 feet in length and has a characteristic diamond-shaped pattern on its back, hence its name. It primarily feeds on small mammals such as rodents and rabbits, using its venomous fangs to immobilize its prey. Despite its venomous nature, this snake plays an important role in maintaining the balance of desert ecosystems by controlling rodent populations.


The West Coast of the United States is a haven for a wide array of animal species, each with its own unique adaptations and ecological roles. From the majestic gray whales that grace the coastlines to the playful California sea lions, the coastal areas are teeming with life. Inland, the Roosevelt elk roams the lush forests, while the Western diamondback rattlesnake thrives in the arid deserts. Exploring the diverse wildlife of the West Coast is not only a fascinating experience but also a reminder of the importance of preserving these habitats for future generations to enjoy.

About Marisa Lascala

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