Emerita analoga, commonly known as the Pacific mole crab, inhabits sandy beaches along the Pacific Coast. These small, burrowing crabs are well-known for their unique filtering behavior, using feathery antennae to sift plankton and detritus from seawater. They play a critical role in coastal ecosystems, serving as prey for various shorebirds and fish.

Emerita analoga, commonly known as the Pacific sand crab or mole crab, is native to the Pacific coast of the Americas. Its geographical distribution spans from the southern coast of Alaska in the United States, down through Canada, and along the western coasts of the contiguous United States and Mexico, extending as far south as Baja California. This species is prevalent along sandy beaches within this range.

Emerita analoga inhabits sandy beach environments, typically found in the intertidal zone where the ocean meets the land. These crabs are adapted to live in shifting sands, where they burrow quickly to avoid predators and environmental changes. The climate along their native region varies from temperate in the northern parts of their range to subtropical in the southern areas. The tidal fluctuations and wave actions are critical for their feeding and burrowing activities.

As a part of the intertidal ecosystem, Emerita analoga plays a significant role in the beach's food web. They filter-feed on plankton and other organic matter carried by waves, contributing to nutrient cycling in their habitat. Their presence is vital for maintaining the ecological balance, serving as prey for various shorebirds and fish. Adaptations to their niche include a streamlined body shape that facilitates burrowing and a unique ability to move with the flow of the water, reducing the risk of being washed away.