Reviewed · CATANIA TOURS
Catania: Gulf Scuba Diving Tour with Marine Biologist
Underwater volcanic rock is the star here. From the meeting point at Etna and Sea Excursions, you head toward the Cyclopean Isles near Aci Trezza, where ancient lava flows form basalt columns, ropes, pillows, sandy patches, canyons, and faults below the surface. The sea life is an added reward, with bream, octopus, sponges, gorgonians, starfish, crabs, and small fish all possible sightings.
I like the patient instruction from guides such as Andrea, especially for first-timers who feel nervous about breathing underwater. I also like the marine-biology focus, which turns a pleasant boat outing into a lesson about Sicily’s volcanic coast. The main consideration is time: the advertised activity lasts 3.5 hours, but the actual time underwater may feel short if you want a long technical session.
Key points at a glance

- Beginner-friendly support: Andrea and the other instructors explain the equipment step by step and check on you often in the water.
- Volcanic seabed: Expect basalt columns, lava ropes, pillow formations, white sand, underwater canyons, and volcanic faults.
- Marine life: Bream, octopus, sponges, gorgonians, starfish, crabs, and fish nurseries may appear along the route.
- Cyclopean Isles setting: The boat trip near Aci Trezza adds views of one of Sicily’s most distinctive coastal areas.
- Small-group feel: The guides are praised for giving nervous beginners close attention and adapting to the group.
- Good value at $82: Equipment, a professional guide, instruction, and the boat-based outing are included, but hotel transfers are not.
What makes the Gulf of Catania special

The Gulf of Catania is not simply a place to put on a mask and look at fish. Its underwater character comes from Mount Etna and Sicily’s volcanic geology. Lava once reached the sea and cooled into strange shapes, leaving a seabed that feels more sculpted than sandy.
Near Aci Trezza, the Cyclopean Isles add a dramatic setting above the water. Below it, the rock may form dark walls, narrow channels, rounded pillow shapes, and rough lava ropes. White sand between the black volcanic formations creates a strong contrast, helping fish and sponges show up clearly.
I think this geological setting is the best reason to choose this outing over a basic swim. You are not only watching marine life. You are seeing how volcanic activity shaped the coast from both above and below the water.
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Meeting the Etna and Sea Excursion team

You begin at Etna and Sea Excursions, the stated starting point for the activity. Hotel pickup and drop-off are not included, so you need to make your own way there. That is worth planning carefully, particularly if you are staying outside Catania or relying on a tight sightseeing schedule.
The staff includes marine biologists and scuba instructors, with Andrea receiving repeated praise for calm explanations and close attention. Other guides named in the experience include Jerry, Rosario, Carla, and Fabio. The exact staff lineup can vary, but the team offers instruction in English, French, Italian, Portuguese, Spanish, and German.
You receive the required scuba equipment as part of the price. The stated aim is comfort and safety, with the guide helping you get used to the gear before entering the water. First-time participants are not simply sent off to figure it out alone. The instructions are given on the boat and again in the water before the group moves farther out.
That second explanation matters. Several people had never tried scuba before, and some arrived nervous or unsure of their swimming ability. The guides used simple instructions, stayed close, and checked that each person was comfortable. If you are anxious, tell the instructor early. This is the sort of activity where honest communication makes the experience much easier.
The boat ride toward the Cyclopean Isles

The outing includes a boat ride along the Sicilian coast toward the Cyclopean Isles. The trip is part transportation, part sightseeing, and part introduction to the area. You may hear about the local coastline, the islands, Etna, and the marine environment before entering the water.
An aperitif is included in the listed route, and past outings have also included snacks and drinks. Since the formal inclusions specifically name the professional guide and scuba equipment, I would confirm exactly what refreshments are provided on your departure.
The boat portion gives non-divers something to enjoy too. A companion who does not want to use scuba gear may be able to snorkel, though the supplied details do not define a separate snorkel package or guarantee a particular arrangement. One past account describes a companion snorkeling with Jerry while the other participant used scuba equipment.
A small drawback is that some people may want less time on the boat and more time below the surface. One account specifically wished the boat ride had been shorter. If your main goal is a lengthy underwater workout, ask how much time is planned for your particular departure.
Getting comfortable with the equipment

Before you enter the sea, the instructor explains the equipment and the basic steps. You learn how to breathe through the regulator, how to move while wearing the gear, and how to communicate underwater. The guide also explains the rules again before you leave the boat.
The experience is designed for beginners as well as certified or more experienced participants. That does not mean the two groups necessarily receive the exact same session. The staff can tailor the outing to ability, and one past participant with more experience received a route adapted to their level.
For a first-time participant, the most important benefit is the pace. The staff does not rush people into the water and immediately push them away from the boat. You have time to settle your breathing and get used to the strange feeling of being supported by the water.
This is also where the small-group approach helps. The guides can keep an eye on each person, and they repeatedly check for comfort and understanding. One nervous participant described an instructor helping their partner throughout the activity. That kind of support can make the difference between an enjoyable first attempt and an afternoon spent worrying about the equipment.
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The underwater route through lava formations

Once you are comfortable, the guide leads you over the lava seabed. The route may pass through underwater canyons and along volcanic faults, with the guide pointing out the shapes and features as you go.
The rock formations are likely to be more interesting than a flat sandy bottom. Look for basalt columns, rope-like lava, rounded pillow formations, and pale sand set between darker stone. The effect is especially striking when sunlight reaches the shallower sections, though visibility and conditions can change.
The tour is not presented as a technical expedition. It is a guided introduction to the underwater world around Catania, with safety and observation taking priority. Past participants describe roughly 30 minutes of actual underwater time, though the overall timing can vary. The published duration is 3.5 hours, while the route description also refers to a four-hour period, so confirm the precise schedule when you book.
You should expect the guide to lead rather than leave you to explore alone. That is useful for beginners, since the instructor can keep the group together and help you focus on breathing, position, and the surroundings instead of worrying about navigation.
Marine life you may see

The Gulf’s volcanic habitat supports a good variety of smaller sea life. The stated highlights include bream, octopus, sponges, and gorgonians. Past outings have also included starfish, brightly colored crabs, schools of fish, and fish nurseries.
Octopus sightings are never guaranteed, but the rock formations give them plenty of places to hide. Keep your eyes on cracks and shadowed spaces rather than looking only into open water. A guide with marine-biology training can spot movement and color that you might miss.
The same applies to sponges and gorgonians. These creatures may blend into the rock at first, especially if you are concentrating on your breathing. The guide’s comments make the experience more rewarding because you learn what you are seeing instead of treating every shape as just another piece of scenery.
The water is described as clear in the supplied accounts, with colorful fish and bright crabs appearing during several outings. Still, sea conditions, visibility, light, and seasonal marine life are never fully predictable. You should book this for the volcanic seabed and guided instruction first, then treat particular animals as welcome surprises.
Safety and confidence for first-timers

Safety is the strongest theme in the feedback provided for this activity. Andrea and the wider team are repeatedly described as calm, patient, and attentive. The guides explain the process clearly, watch participants closely, and check underwater that everything is fine.
That care is especially valuable if you are nervous. One person arrived frightened and gradually became comfortable with an instructor’s help. Another account describes the guide changing plans when jellyfish made an afternoon outing unsuitable, then suggesting a safer departure the following morning. The group either moved to a safer site or offered a refund, according to the circumstances described.
That example also shows an important point: the staff may adjust the plan for safety. The exact site is not necessarily fixed in every condition. You might visit another location, and that is a good trade if it gives you a safer and more comfortable session.
The activity is not suitable for pregnant women or people with heart problems or high blood pressure. If you have any medical concern, check with a doctor before booking and disclose relevant information to the operator.
How much does $82 buy you?

At $82 per person, this is a fair price for a guided first scuba experience in a memorable setting. You are paying for professional instruction, equipment, marine interpretation, boat access, and several hours around the Cyclopean Isles. Renting gear and arranging a guide separately would make a simple outing more complicated.
The value is strongest for beginners. You get support before entering the water, help during the session, and a guide who can identify marine life and explain the volcanic coast. Some outings have also included photos or videos taken by the instructor and shared afterward, though this is not listed as a guaranteed inclusion.
Experienced divers may judge the value differently. The tour is not described as a long, advanced, or highly technical session. If you want maximum bottom time, challenging depth, or a specialized route, ask detailed questions before paying. For a relaxed introduction or a short scenic underwater outing, the price makes more sense.
Hotel transfers are not included, so add your own transport costs if needed. The activity offers free cancellation up to 24 hours before departure and a reserve-now, pay-later option, which helps if your Sicilian schedule is still changing.
Who should book this experience?

I would choose this for a first scuba attempt, a couple wanting an active half-day near Catania, or a family with older children who meet the operator’s requirements. The guides have experience helping people who are nervous, inexperienced, or not especially confident in the water.
It also suits someone who cares about what they are seeing. The marine-biologist angle gives the outing more substance than a basic equipment lesson. You will learn about fish, rock formations, and the local marine habitat while moving along the coast.
Experienced divers can still enjoy it, particularly if they want a guided look at the Cyclopean Isles or prefer not to arrange a full independent session. Just keep expectations realistic: this is a short, supported excursion rather than a full day of underwater exploration.
I would not book it if you have a serious medical restriction listed above, want guaranteed sightings of a certain animal, or need a very long session below the surface. I would also avoid scheduling it as the last possible activity of a packed day. Conditions can affect the site and timing, and the calm pace is part of the point.
Should you book the Catania Gulf scuba tour?
Yes, if you want a safe and friendly introduction to scuba around Catania. The combination of lava formations, the Cyclopean Isles, marine-life explanations, and patient guides gives you more than a basic swim with tanks.
The best reason to book is the support from Andrea and the team. Nervous beginners are given clear instructions, close supervision, and time to settle in. The main caution is to confirm the exact schedule and expected underwater time, since the boat ride is a meaningful part of the outing and the published timing varies slightly.
At $82, it is a sensible choice for a first underwater experience in Sicily, especially if you value instruction and local marine context as much as time below the surface.
FAQ
Where does the scuba tour begin?
The activity starts at Etna and Sea Excursions in Catania.
How long does the activity last?
The advertised duration is 3.5 hours. The route description also refers to a four-hour period, so confirm the exact timing when checking available departures.
Where does the boat go?
The outing heads toward the Cyclopean Isles near Aci Trezza and the Gulf of Catania.
Is scuba equipment included?
Yes. Diving equipment and a professional guide are included in the activity price.
Is the tour suitable for beginners?
Yes. The experience is suitable for beginners and more experienced participants. The instructors explain the equipment and procedures carefully and provide close support in the water.
Which languages are available?
Instruction is available in English, French, Italian, Portuguese, Spanish, and German. Audio guides are listed in French, Spanish, Portuguese, and German.
Is hotel pickup included?
No. Hotel pickup and drop-off are not included, so you must reach the starting point yourself.
Who should not take part?
The activity is not suitable for pregnant women or people with heart problems or high blood pressure.
Can I cancel the booking?
You can cancel up to 24 hours in advance for a full refund. A reserve-now, pay-later option is also available.
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