Reviewed · SICILY TOURS
Catania: Gulf Scuba Diving Tour with Marine Biologist
Volcanic water off Catania feels like another planet. I love the way the marine biologist leads the experience, and how Andrea keeps first-timers calm with step-by-step instruction.
You also get to explore a place where the seabed looks like it has its own geology story. The Cyclopean Isles area and the lava seabed create a dramatic underwater setting, and the species you can spot help make the science feel real.
One possible drawback: the half-day format means your time underwater is shorter than you might wish, especially if you fall in love fast.
In This Review
- Key points before you book
- Meeting at Etna & Sea Excursions, then out on the long-tail
- Gulf of Catania lava terrain, where geology meets marine life
- Andrea and the marine biologist team, safety that feels personal
- What you’ll likely see: octopus, sponges, bream, and more
- The timing: what 3.5 hours really feels like
- Equipment and comfort, what’s included and what you should plan
- Languages: instruction you can understand without guessing
- Price and value: $82 for a guided science-based experience
- Who should choose this tour, and who might not love it
- Quick checklist before you go
- Should you book this Gulf of Catania marine biologist scuba tour?
- FAQ
- Where does the scuba tour start?
- How long is the tour?
- Do I get hotel pickup or drop-off?
- What areas do you explore underwater?
- What is included in the price?
- Is this tour suitable for beginners?
- What languages are available?
- Who is this tour not suitable for?
- Do they take photos or videos?
- What’s the cancellation policy and payment flexibility?
Key points before you book

- Marine biologist guidance makes the trip feel like a science lesson, not just an activity.
- Andrea’s teaching style stands out for nervous first-timers, with clear, calm checks before you go down.
- Lava formations and white sand create an eye-catching mix, including basalt columns and lava “ropes.”
- Small-group support means you get frequent attention underwater, plus extra help if you need it.
- Cyclopean Isles area is the focus, with a strong chance to see octopus, bream, sponges, and gorgonians.
- Aperitif and boat time are part of the full experience, not just a quick ride to the water.
Meeting at Etna & Sea Excursions, then out on the long-tail

Your day starts at Etna & Sea Excursions. You meet the team, get organized with the scuba gear, and get your bearings before the boat heads toward the Cyclopean Isles area around Aci Trezza.
Then the experience shifts to a Sicilian rhythm. Expect a long-tail boat ride plus sailing time, and there’s even an aperitif as you look out for marine life from the surface. This matters because it sets the tone, you are already “switched on” before you go underwater.
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Gulf of Catania lava terrain, where geology meets marine life

What makes this area so memorable is the mix of volcanic seabed and protected marine habitat. You are exploring the Gulf of Catania’s lava seabed and the marine protected area around the Cyclopean Isles, also called Isole Ciclopi.
Underwater, the scenery is described as ancient lava flows and expanses of white sand. You may see basalt columns, lava ropes, and lava pillows, which sounds abstract until you are looking at it with clear water and the right lighting. Then your guide points out the living layer growing on it, like sponges and gorgonians, so the rock formations stop being scenery and start being habitat.
Andrea and the marine biologist team, safety that feels personal

For many people, the biggest question is simple: will I feel safe? The consistent theme from the experience is careful instruction and frequent check-ins.
Andrea and the team explain everything clearly and calmly, first on the boat and again before you enter the water. Reviews specifically mention that the staff runs through steps more than once and checks that you are comfortable, not just “ready enough.” If you are a nervous beginner, this pacing helps you get comfortable with breathing, buoyancy, and basic movements.
Small groups also help. Multiple accounts mention extra attention with more than one instructor, and that support continues underwater. In one report, Andrea and a second guide (Jerry) kept a close eye on a beginner’s confidence level, and guidance stayed hands-on rather than hands-off.
What you’ll likely see: octopus, sponges, bream, and more

The Gulf of Catania and Cyclopean Isles area is known for plant and animal life clinging to lava structures. You may see bream, octopus, and sponges, plus gorgonians (a type of sea fan coral). The feeling you want is this: you are not just passing over sand, you are moving through a living wall.
There are also species sightings that sound like they belong in a nature documentary. One person described bright, almost neon crabs, and another mentioned starfish. Those sightings can vary by season, conditions, and where the guide chooses to go, but the overall “hit list” is consistent: rock-dwellers, filter feeders, and curious little crustaceans.
Here’s a practical tip: look where your guide looks. When the marine biologist points at a crevice or a patch of rock, it is usually where life is hiding or feeding. It is also how you learn to read the underwater environment fast, instead of just staring at the biggest thing in sight.
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The timing: what 3.5 hours really feels like

This tour is listed as about 3.5 hours. In practice, that usually means you spend a chunk of time traveling by boat and preparing, then a shorter underwater window to keep the experience manageable and comfortable for all skill levels.
Several first-timers mention a relatively short time underwater, around 30 minutes for the main session. That can feel brief when you want more, but it is often the sweet spot for beginners so you can focus on technique and enjoy what you see without getting exhausted.
You will finish back at Etna & Sea Excursions and return your gear. Since the trip ends where it started, it is easier to plan your evening in Catania or nearby areas without complicated transfer arrangements.
Equipment and comfort, what’s included and what you should plan

The good news: diving equipment is included. You also get a professional guide, and the experience is designed to give you attention and support whether you are starting out or returning for more.
What is not included is hotel pickup and drop-off. So if you do not already have a plan for getting to Etna & Sea Excursions, build in time for transport. This is the kind of detail that can make a half-day plan feel easy or stressful.
Also, check whether you fit the safety requirements. The activity is not suitable for pregnant women, people with heart problems, and people with high blood pressure. If any of that applies to you, do not “wait and see.” Ask medical questions first, then choose another ocean experience if needed.
Languages: instruction you can understand without guessing

Communication makes or breaks a first scuba session. The instructor is listed in multiple languages: English, French, Italian, Portuguese, Spanish, and German. That’s a big deal because you want clear answers about breathing, hand signals, and what to do if something feels off.
There is also an audio guide included in French, Spanish, Portuguese, and German. Even if you mostly rely on the live marine biologist, these extras help you connect the science to what you are seeing.
Price and value: $82 for a guided science-based experience

At $82 per person, this tour sits in the “worth it if you want quality” zone. You are paying for more than equipment access. The big value is the guided structure: a marine biologist or marine expert, careful beginner coaching, and a route built around volcanic formations and a protected area.
The price also makes sense if you are comparing it to DIY snorkeling. Snorkeling can be a nice day on the water, but the scuba part is what lets you get close to lava formations and the animals using them for shelter. If you are a beginner, the instruction component is often the difference between a fun memory and a stressful one.
One more value note: some reviews mention photos and videos taken during the underwater session and shared afterward. If you care about saving proof that you saw an octopus in the wild, that kind of added service can make the price feel even more reasonable.
Who should choose this tour, and who might not love it

This is a strong fit for beginners. Multiple accounts describe complete first-timers feeling reassured because they received clear steps, multiple checks, and constant support underwater. If you are comfortable following instructions and you want to learn while you explore, you will likely enjoy the pace.
It also works for more experienced divers. The tour emphasizes exploration of canyons and volcanic faults, and the marine biologist framing helps everyone learn something beyond “just look around.”
It may not be your best match if you want a long underwater session. The time is designed for a half-day experience, and the underwater window is not huge. If you want hours and hours under pressure, you would probably want a different type of program.
Quick checklist before you go
Here are the questions I’d ask, based on what tends to matter for comfort and safety:
- Which language will the main briefing and in-water instruction be in for your group?
- How many instructors will support your group underwater, and who should you follow for signals?
- What should you do if you feel anxious on the boat or before entering the water?
- What marine life are you most likely to see during your season and conditions?
- Will you receive any photo or video sharing after the session?
It is also smart to ask how they handle changing water conditions. One account describes jellyfish affecting the plan, and the team adjusting options with a next-day approach. Ocean conditions can change, and a guide who adapts quickly is a big plus.
Should you book this Gulf of Catania marine biologist scuba tour?
Book it if you want a beginner-friendly scuba experience with real marine science behind it. The combination of careful instruction, strong safety attention, and volcanic habitat exploration is exactly what makes this area special.
Skip it if your schedule demands pickup convenience you cannot arrange yourself, or if your health situation falls into the listed non-suitable categories. And if you are the type who needs a long underwater session to feel satisfied, look for a longer format.
If you do book, go in with the right mindset: this is a guided learning experience in a volcanic marine protected area. You might end up counting animals faster than you count hours, and you will probably want to come back to see what the next lava canyon holds.
FAQ
Where does the scuba tour start?
The meeting point is Etna & Sea Excursions.
How long is the tour?
The duration is about 3.5 hours.
Do I get hotel pickup or drop-off?
Hotel pickup and drop-off are not included.
What areas do you explore underwater?
The tour focuses on the Gulf of Catania area and the marine protected area of the Cyclopean Isles (Isole Ciclopi).
What is included in the price?
You get a professional guide and the diving equipment.
Is this tour suitable for beginners?
Yes. It is described as suitable for both beginners and more experienced divers, with attention and support throughout the experience.
What languages are available?
Instruction is available in English, French, Italian, Portuguese, Spanish, and German. An audio guide is included for French, Spanish, Portuguese, and German.
Who is this tour not suitable for?
It is not suitable for pregnant women, people with heart problems, or people with high blood pressure.
Do they take photos or videos?
Some participants report that photos and videos were taken during the underwater session and shared afterward.
What’s the cancellation policy and payment flexibility?
Free cancellation is available up to 24 hours in advance for a full refund, and you can reserve now and pay later.
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