Nudibranch
Swim, Snorkel, Dive, See, Meet, Watch the Nudibranch
Nudibranch means "bare gills" because some have a feather on the back of their body, their gills.
The nudibranch is a sea slug-type mollusc that has lost its shell. It sometimes reaches a large size like the Spanish dancer, 40 cm long.
Others have respiratory papillae instead of feathers. The nudibranch has two long antennae serving as its sensory organ.
There are 3000 species of nudibranchs distributed in all the oceans of the world and at all depths, between 1 and 200 m deep. The greatest diversity is found in coral areas and warm waters.
Not to be confused with flatworms which do not have a gill plume.
CHECK SEASONALITY
Nudibranchia
Macro
Nudibranche, Nudibranch
Food
The nudibranch is a carnivore. It has a tongue filled with teeth that it uses as a rasp.
Some of them eat sponges and ascidians.
Others can keep in their tissues the toxic substances and intact stinging cells of jellyfish, anemones, and corals that they have previously devoured. They transfer them to their dorsal villi to repel possible predators.
Other types of nudibranchs harbor micro-algae that provide them with food.
Breeding
The nudibranch is both male and female. Nevertheless, two nudibranchs are needed to mate, which they do by means of protuberances on the sides of their heads.
Egg-laying is a myriad of ribboned eggs.
Some nudibranchs regenerate body parts when they are damaged.
Dive centers
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Wonderful Dive El Quseir
Egypt
- Qoseir

Wonderful dive is located at Rohanou Beach Resort, 10 km south of Qoseir, on the edge of Zerib Kebir Bay, fairly sheltered from the waves and the prevailing wind.
Your transfer is organized from one of the two airports Marsa Alam or Hurghada to arrive at the hotel. The center opens from 8 am to 5:30 pm but early morning dives take place from 6 am, as well as night dives at 6:30 pm. Every morning and afternoon, the Wonderful dive shuttle allows the transfer of divers from the following hotels: Flamenco Beach & Resort (20 mn), Mövenpick Resort (18 mn), Radisson Blu Resort ( 15 mn), Utopia Beach Club (10 mn), Pensee Azur Resort (10 mn), Novotel Marsa Alam (7 mn).
In front of the Rohanou Beach Resort, you will discover the magnificent House Reef starting with a shallow bay. Heading south, you explore canyons and caves. To the north, take a stroll in a magnificent coral garden. You also have the choice to change House Reef by driving to the Akassia Swiss Resort, on the edge of Meheleg Bay, further south. Another Wonderful dive center is installed there, which allows you to discover along with vertiginous drop off (exposed to the wind).
You can embark on a Zodiac, along the House reef, to Nemo City, a garden of anemones from 28m to 35m deep or to Zereb Soraya to walk in canyons and caves, before returning to the pontoon while snorkeling. You also leave in the morning by jeep and minibus to make 2 dives along the coast, on sites such as El Sheikh Malik, Mangrove bay, Sough Bahar, The cave, Torfa Sabaa, returning before lunch. Some sites are particularly suitable for snorkeling. Embark on larger boats, for a half-day at sea with 2 dives.
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- Functional boat
- Accomodations and diving
- House Reef
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Orca Diving Ustica
Sicily
- Ustica
  
Orca Diving Ustica is located on the island of Ustica, off the coast of Sicily. Welcomed in French and English, divers will find its premises at the port, close to the village, within walking distance of the accommodation. Ideal for passionate divers, alone or with family, in a group or couple, Orca Diving Ustica proposes very attractive offers for a week or a weekend. Claire organizes your diving holiday in Ustica from your arrival at Palermo airport to the ferry terminal, including ferry tickets, accommodation bookings at the best price, and excursions in Ustica. Orca Diving Ustica is a PADI 5-Star Instructor Development Dive Resort and offers the full range of PADI courses from Scuba Diver to Rescue Diver, as well as divemaster and instructor courses. Orca Diving Ustica offers Freediving courses to introduce beginners to freediving.
Nitrox diving is on demand and if you bring your own rebreather, the logistics are provided (lime on reservation). Possibility of renting equipment on site with the use of 15L or 18L steel double exit cylinders. Take advantage of your first dive at Orca Diving Ustica for very personalized supervision. Board spacious zodiacs, specifically equipped for diving, and comfortably reach, in just a few minutes, the best diving spots in Ustica, in the Marine Reserve, such as Grotta dei Gamberi, Punta dell Arpa, Scoglio del Medico. Guides, specialized in marine biology and cave diving, supervise small groups of divers. Non-divers can come on board the boat. Orca Diving Ustica is a place where divers, snorkelers, and snorkelers can meet and exchange ideas over aperitifs and lunches. The Ustica medical centre has a hyperbaric chamber. [+]
- Protected Marine Park
- Near Downtown area
- Cave diving
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Le Raie Manta Club
Polynesia
- Rangiroa

The Raie Manta Club is located on Rangiroa atoll, less than an hour's flight from Tahiti. The Raie Manta Club, located on the Tiputa pass side, is open all year round. Every day, the departure for an exploration dive takes place around 8 am and the rehabilitation dives are organized around 10 am. The second exploration dive takes place from 1.30 pm. If you wish to do a sunset or twilight dive, this takes place in the late afternoon at around 5 pm, upon request.
Transfers by 4x4 are free of charge from your guesthouse. The bilingual instructors, state-certified and sea guides, will prepare your equipment and then, after their briefing, they will guide you to discover this exceptional fauna. Whether you are a beginner or an experienced diver, you will dive in small groups of the same level on the reef or in the drift, in the passes, in an ongoing current. Customized safaris are organized on request for photographers and for film shoots.
Manta rays, more numerous from July to November, are present all year round. The great hammerhead shark "Tamataroa" is attracted to the leopard ray aggregations from December to February. Tursiops bottlenose dolphins are very playful and are present all year round. Seven different species of sharks can be seen in all seasons, both outside the atoll and inside the passes and lagoon. Whether the trade winds or the maramu blow, Rangiroa offers great diving opportunities all year round.
Rangiroa is the largest atoll in the South Pacific and one of the largest in the world. It is 76 km long and 24 km wide. Made up of a 300-meter wide coral strip, it surrounds the lagoon with its turquoise waters, rich in wildlife. To the north, separated by the two passes of the atoll, the villages of Avatoru and Tiputa are about 12 km apart.
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- Dolphin watching
- Hammerhead sharks Watching
- Manta Rays Watching
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Mundo Submarino
Mexico
- Veracruz

Mundo Submarino is located in Veracruz, Mexico. It's opened Monday to Friday from 9 am to 7 pm, Saturday from 8 am to 8 pm and Sunday from 8 am to 3 pm. On-site, you will find a shop with rental and sale of equipment, filling station. You can rent brand new and quality dive gear to enjoy diving comfortably and safely. The modern boat has a capacity of 12 pax with jumps sheltering from the rain and sun and gets quickly to the dive sites. Drinks and snacks on board are offered during the surface interval between the 2 dives. The supervision is made by qualified instructors and guides. They offer exploratory dives, snorkeling, and freediving, day and night. It's possible to dive with nitrox. The diving courses taught at Mundo Submarino are based on the educational system developed by the recreational diving agencies PADI, NAUI, CMAS and SSI, all regulated by the RSTC, an advice agency that certifies and establishes recreational diving standards worldwide. You will find training from Discover Scuba Diver to Master Scuba Diver. [+]
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Scuba Seekers Dahab
Egypt
- Dahab
Scuba Seekers Dive Centre is based at Crazy Camel Camp in Dahab. Open daily from 8 am to 6 pm, the premises include individual and secure lockers for storing your equipment, rinse tanks, one for technical diving and one for recreational diving, and shower rooms. Scuba Seekers is located in an inner courtyard, away from the hustle and bustle of the street, allowing you to relax after a day of diving or studying. The environment is ideal for learning and planning your dives, doing theory exercises or debriefings with your instructor. The Scuba Seekers training centre offers PADI courses for recreational diving from the beginner level with the Scuba Diver to the professional level Divemaster and Instructor.
You can take TDI courses to start technical diving from Advanced Nitrox to Trimix diver. Those who want to learn how to use a rebreather to explore the underwater world are welcome here. Do you dream of becoming a technical diving instructor? All you need to be is an experienced dive instructor in active status as well as a tech diver. Depending on your level, tek and recreational exploration dives are organised in Dahab. Discover the Blue Hole, one of the best technical dive spots in the world, and pass under the legendary arch!
According to regular divers, the Scuba Seekers club is a real family of enthusiasts, combining fun, safety and eco-friendly diving. The instructors prepare their students to dive anywhere in the world with an approach to marine environmental awareness. To make night diving even more magical, observe the bioluminescence of corals with a blue light lamp and a yellow filter on the mask. Take part in photo workshops led by award-winning photographer Kjeld Friis. Scuba Seekers was named one of the world's top 10 dive centres in 2020 by Dive Magazine!
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- Near Downtown area
- Carry Less Equipment
- Shore diving
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