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Crustaceans - Marine life of Marsa Alam

Marine Life . 6 species

CrustaceansArmoured residents of the reef.

Hidden in coral cracks and night-time emergent, crustaceans range from tiny cleaner shrimp to the spectacular mantis shrimp with the fastest punch in the animal kingdom.

Red Sea reef detail6Species in this group
BestYear-round (more visible on night dives)
Where6 dive sites

About crustaceans

By day, most stay tucked into coral cracks; at night, they emerge in their thousands.

The species

Every crustacean you can meet in Marsa Alam.

Peacock Mantis Shrimp (Odontodactylus scyllarus)Common

Peacock Mantis Shrimp

Odontodactylus scyllarus

Spectacularly coloured predator with the fastest punch in the animal kingdom.

Did you know? Their punch accelerates faster than a .22 caliber bullet, creating cavitation bubbles that emit light.
Size
18 cm
Diet
Crabs, snails
Season
Year-round

Best places to see one

Banded Coral Shrimp (Stenopus hispidus)Very common

Banded Coral Shrimp

Stenopus hispidus

White body with red bands and long white antennae waved as cleaning station advertising.

Did you know? They mate for life and share cleaning duties for years.
Size
6 cm
Diet
Parasites, dead skin from fish
Season
Year-round

Best places to see one

Painted Spiny Lobster (Panulirus versicolor)Common

Painted Spiny Lobster

Panulirus versicolor

Bright blue and orange spiny lobster that hides in caves and under ledges by day.

Did you know? Long antennae detect predators and communicate.
Size
40 cm
Diet
Mollusks, dead fish, algae
Season
Year-round

Best places to see one

White-banded Cleaner Shrimp (Lysmata amboinensis)Very common

White-banded Cleaner Shrimp

Lysmata amboinensis

Tiny translucent shrimp with red and white stripes. Will clean diver hands if you hold them out.

Did you know? They use a small dance to advertise their cleaning service.
Size
6 cm
Diet
Parasites, dead tissue
Season
Year-round
White-spotted Hermit Crab (Dardanus megistos)Common

White-spotted Hermit Crab

Dardanus megistos

Large hermit crab in abandoned snail shells, often topped with sea anemones.

Did you know? The anemone stings predators in exchange for transport.
Size
15 cm shell
Diet
Carrion, algae
Season
Year-round

Best places to see one

Decorator Crab (Camposcia retusa)Rare

Decorator Crab

Camposcia retusa

Tiny crab that camouflages itself with sponges, algae, and small animals.

Did you know? They are picky decorators - choosing items based on local reef colour palette.
Size
3 cm
Diet
Algae, plankton
Season
Year-round on night dives

Best places to see one

Other marine life

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