Spanish Dancer Nudibranch Night Dive — Red Sea Egypt
The Hexabranchus sanguineus — Spanish dancer nudibranch — is the world's largest nudibranch at up to 60 centimetres, and its night behaviour in the Red Sea's Ras Mohammed and Brothers Islands dive sites is one of the Indian Ocean's most theatrical animal displays. When disturbed, the Spanish dancer exits its crevice and swims by undulating its crimson-and-white ruffled mantle edge through the water column in a sinuous, rippling movement that earns the name. Red Sea specimens reach maximum size and colour intensity, the vivid red and white creating a contrast against the dark night water that is visible at 5 metres distance with a torch. Night dives at Ras Mohammed's shark reef in October–March, when water is clear and temperatures comfortable, routinely produce Spanish dancer encounters, and the dense soft coral forests of the Brothers Islands provide background that amplifies the visual impact of the largest nudibranch most divers will ever see.
About this spectacle
Slipping beneath the Red Sea at night, divers enter a world transformed. Torchlight catches the brilliant crimson-and-white mantle of a Spanish dancer nudibranch emerging from a reef crevice — the world's largest nudibranch, reaching up to 60 centimetres. When disturbed, the creature launches itself into the open water and begins its signature sinuous, rippling swim, the ruffled mantle edge undulating like a flamenco skirt. The vivid red-and-white contrast blazes against the dark water, visible at up to five metres with a dive torch. Ras Mohammed's shark reef and the Brothers Islands' dense soft coral forests are the prime stages for these encounters. The October–March window offers clear water and comfortable temperatures, making sightings reliable. Divers hang motionless, exhaling slowly, as the creature spirals through the beam of light — an experience consistently cited as a career highlight by experienced divers. The surrounding reef, alive with nocturnal invertebrate activity, amplifies the atmosphere of the encounter.
When to go
Oct — Mar
Getting there
Nearest airport: SSH. Nearest city: Sharm el-Sheikh.
Booking options
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