Origin
Native to the Eastern Pacific Ocean, ranging from central California to southern Mexico. Commonly found along rocky reefs, kelp forests, and sandy bottoms at depths of 5–200 meters.

Visual & Behavioral Appeal
Features a robust, mottled beige-and-brown body with a blunt snout and large greenish eyes. When threatened, it inflates its body with water or air to wedge into rocky crevices or deter predators. Nocturnal and slow-moving, it rests curled in caves during the day and hunts at night.

Purpose
Acts as a fascinating showcase species for coldwater marine tanks or public aquarium exhibits. Its inflation behavior, resting posture, and cryptic camouflage make it an unusual, conversation-starting addition.

Importance
Ideal for aquarists building species-specific or educational temperate tanks. Its care difficulty and tank size make it unsuitable for general hobbyists but important for conservation-focused aquaria.

Included Resources
Needs a chiller, dim lighting, sandy or fine substrate, and secure rock structures. Strong biological filtration and low-stress tankmates are essential for long-term success.

Best Use Cases
Coldwater marine aquariums (180+ gallons), kelp forest biotopes, research exhibits, and large public aquarium displays.

Conservation Context
While not currently endangered, the Swell Shark is part of fragile kelp forest ecosystems. It is a sentinel species affected by overfishing, ocean warming, and habitat degradation.

Ideal Aquatic Species
• Catalina goby
• Coldwater blennies
• Island cowfish
• Other coldwater inverts and fish with passive temperaments
• Avoid fast or aggressive reef species

Region (A)
• Latitude: 34.0259° N
• Longitude: -118.7798° W
(Point Dume, California — kelp forest habitat)

Region (B)
• Latitude: 23.6345° N
• Longitude: -102.5528° W
(Southern Baja coast — sandy reef interface)