Mediterranean moray eel
Muraena helena
Characteristics
Scientific name
Size
Depth range
Nutrition
Behave
Frequency in Cyprus
Protection status
Native/Immigrant
Muraena helena
Usually 60 to 100 cm in length, reaching a maximum of approximately 130 to 150 cm.
Approximately 0 to 80 metres depth, occasionally found deeper.
Predatory; feeds primarily on fish, crustaceans, and cephalopods.
Solitary; usually hidden in rock crevices and caves during the day, becoming active at night.
Common to regularly encountered at suitable rocky reefs and cave systems.
IUCN: Least Concern (not threatened).
Native Mediterranean species.
The Mediterranean Moray (Muraena helena) is one of the best-known predatory fish in the Mediterranean Sea. During the day, often only its head can be seen protruding from a rock crevice, while at night it becomes active and leaves its shelter to hunt for food. Its constant opening and closing of the mouth is a normal breathing behaviour and should not be interpreted as a threat display. Around Cyprus, Mediterranean Morays can be observed at rocky dive sites such as Caves & Tunnels, as well as at many other reef and cave habitats.
Where to Find in Cyprus: Dive Sites & Habitat
The Mediterranean Moray (Muraena helena) is widespread throughout the Mediterranean Sea and is one of the native species regularly encountered around Cyprus. It prefers rocky coastlines, reefs, crevices, caves, and overhangs that provide shelter during the day. Most sightings occur between 5 and 40 metres depth, although larger individuals may also be found in considerably deeper water.
For divers, morays are particularly interesting because they often use the same hiding places for extended periods. In Cyprus, they are regularly observed on structurally rich rocky reefs.
Good opportunities for sightings exist at cave and reef sites such as Caves & Tunnels and The Trench within the Cape Greco Marine Protected Area, where Mediterranean Morays are among the species most frequently documented.
Sightings are also possible year-round along many other rocky coastal sections in the Protaras and Ayia Napa region.
Behavior & Key Features Underwater
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The Mediterranean Moray (Muraena helena) is primarily nocturnal. During the day, it usually remains hidden within its shelter, only emerging after dark to hunt. Its constant opening and closing of the mouth is mainly a breathing mechanism and should not be interpreted as aggressive behaviour. While this can appear intimidating to divers, it is perfectly normal.
Morays possess strong, backward-pointing teeth that allow them to grip and hold their prey securely. Despite their fearsome appearance, they are generally shy towards humans and will usually retreat when disturbed. Bites are rare and occur almost exclusively when an animal is harassed, cornered, or accidentally touched.
As a nocturnal predator, the Mediterranean Moray plays an important role in the coastal ecosystems of the Mediterranean, helping to regulate populations of fish, crustaceans, and other marine organisms.
Frequently asked Questions (FAQ)
Is the Mediterranean Moray dangerous to divers?
No. Mediterranean Morays do not normally attack humans. However, they may defend themselves if they are harassed, cornered, or touched.
Why does a moray eel constantly open and close its mouth?
This behaviour is part of its breathing process. The moray continuously pumps water over its gills to extract oxygen.
Where can you see Mediterranean Morays in Cyprus?
They are most commonly found at rocky dive sites with caves, crevices, and reef structures, such as Caves & Tunnels and other rocky reefs along Cyprus’ east coast.
Written by
Daniel "KID"