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Moray Eel

(Muraenidae)
Population status in the wild: Least Concern

Moray eels are elongated, carnivorous fish that belong to the family Muraenidae. They are found in tropical and subtropical waters worldwide, often residing in rocky reefs, coral gardens, and crevices on the ocean floor. Moray eels have distinctive, slender bodies that can grow up to 13 feet long in some species, though many remain much smaller. They are known for their sharp, toothy jaws and wide mouths, which they use to capture prey.

These eels are nocturnal predators, primarily feeding on fish, crustaceans, and other small marine creatures. Moray eels have a unique feeding strategy, using their second set of jaws, known as pharyngeal jaws, to drag prey into their throats after catching it with their front teeth. Their keen sense of smell and excellent camouflage make them effective hunters. While they typically hunt at night, they may also scavenge food during the day.

Moray eels are solitary animals, often hiding in cracks and crevices to avoid predators and to rest. Their smooth, slippery skin helps them navigate these narrow spaces. Despite their somewhat intimidating appearance, moray eels are not aggressive toward humans unless provoked. They may bite if they feel threatened, but most species are relatively shy.

Moray eels can live for many years in the wild, with some species reaching up to 30 years. They are important members of marine ecosystems, contributing to the balance of food webs by preying on a variety of small marine animals. They also serve as both predator and prey within their ecosystems, with certain species of sharks, large fish, and even octopuses preying on them.

Fun Facts:
Moray eels are known for their "eerie" grin, which is actually caused by their unique jaw structure. Their mouths appear to be open even when they are not feeding, giving them a constant smile.

Moray eels play an important role in controlling populations of smaller fish and invertebrates, helping to maintain the health of coral reefs.

Some moray eel species are capable of swimming by undulating their bodies in a way that allows them to move quickly through the water.

ABOUT US >

Welcome to Cabrillo High School Aquarium, a student run program. Here at Cabrillo High School, we encourage growth and development within our students. As such our directory as well as our program are constantly evolving and changing, similar to the natural world.

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Students that made this possible

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This site was last updated: 04/29/2025

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CONTACT >

T: (805) 742-2888

E: eisen.greg@lusd.org

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