Malta Blue Lagoon Tours
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Deep turquoise water in a cliff-ringed cove on Comino — the dramatic limestone coastline typical of Malta's sea caves and coastal grottoes
Malta sea caves · Blue cave tours · Complete guide · 2026

Malta Sea Caves & Blue Cave Tours: Complete Guide

Malta's soft limestone coastline has been eroded over thousands of years into an unusually dense network of caves, arches and grottoes — particularly around Comino and the northwest coast near St Paul's Bay. Sunlight filtering through the water inside creates a striking blue glow, which is why they're grouped under the term "blue caves." This guide covers where to find them, what to expect on a boat tour, and the best trips that include them.

★★★★★ 4.6–4.9 / 5 across Malta's top-rated cave and Blue Lagoon tours

Accessible only by boat Swimmable & photo-stop caves
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Why they're worth seeing

Why Malta's Sea Caves Are Worth Visiting

Unlike most land attractions, Malta's sea caves are only accessible by boat — or in some cases by snorkelling from a nearby beach. This makes them a natural part of any boat tour itinerary. The soft limestone has been hollowed into caves of all sizes: some large enough to sail into, others just narrow slivers where sunlight turns the water electric blue. The effect is genuinely striking and different from anything on the main island beaches.

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The caves are rarely a standalone destination — most tours include them as a scenic or swim stop en route to or from the Blue Lagoon, which is just a short sail away on Comino. That means you don't usually have to choose between the two: a standard Blue Lagoon tour will typically pass the caves and stop for photos or a swim.

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Worth adding to your Malta itinerary

Other Experiences You Might Enjoy

The tours most visitors pair with a sea cave boat trip.

The Santa Maria Caves on Comino are the most visited sea cave cluster — and most tours that stop there also include the Blue Lagoon, the Crystal Lagoon and a swim stop. If you have more time, a full-day trip adds a few hours ashore on Gozo, or you can swap the swim for a golden-hour sunset cruise along the limestone coastline from Bugibba or St Paul's Bay. The live options below update automatically for these Comino, sea caves and Blue Lagoon experiences.

Cave locations

Where to Find Malta's Best Sea Caves

Four main areas — from the most-visited caves at Comino to the less-known northwest coastline.

Most visited

Santa Maria Caves (Comino)

A cluster of sea caves near Santa Maria Bay on Comino — the most-visited and most-photographed cave group in Malta, almost always included as a stop on Blue Lagoon boat tours. Clear, shallow water makes this a good snorkelling spot. See the full Comino island guide for more on the island's highlights.

North coast

Northwest Coast Caves (near St Paul's Bay)

Malta's northwest coastline, close to popular boat departure points in Bugibba and St Paul's Bay, has several sea caves and coves that shorter coastal tours focus on specifically. Many full-day tours pass these on the way out to Comino. Based here? See our St Paul's Bay & Bugibba boat trips guide.

Less visited

Comino's Coastal Grottoes

Beyond the Santa Maria cluster, Comino's coastline has smaller, less-visited grottoes and arches that some private charters and smaller-group tours detour to. If you want to explore beyond the main stops, a private charter gives you the flexibility to anchor where the cruise boats don't.

Full-day add-on

Gozo's Coastal Caves

Gozo has its own set of coastal caves and rock formations, including dramatic arch formations near Dwejra on the west coast — sometimes included on full-day island-hopping tours that combine Gozo with the Blue Lagoon and Comino. See the Malta & Gozo complete guide for more on what Gozo offers.

On the boat

What to Expect on a Sea Cave Boat Tour

Most cave visits are quick, close-in passes — here's how they work in practice.

  1. Slow, close-in navigation

    Boats typically slow to a crawl or idle just outside or partially inside larger caves to let passengers take photos and take in the blue glow from beneath the water. Captains call out when a cave is coming up — it's worth being on deck with your camera ready.

  2. Swimming and snorkelling

    Many of the shallower caves near Santa Maria Bay have clear enough water to swim or snorkel into the entrance. Visibility is often 20+ metres in calm conditions, with the rock and sand seabed clearly visible from the surface. The Blue Lagoon's deeper, calmer sister — the Crystal Lagoon — is also a great snorkelling spot nearby.

  3. Photography

    The contrast between dark rock and glowing turquoise water makes these caves some of the most photogenic stops on any Malta boat trip. A waterproof case or action camera is ideal — underwater shots inside the shallower entrances are worth taking.

  4. Combined with the Blue Lagoon

    Most tours visit the sea caves and the Blue Lagoon on the same route, so you don't have to choose. The typical pattern: caves as a scenic or swim stop on the way out, then a longer Blue Lagoon swim before sailing back. Check the itinerary to confirm what order your operator uses.

Sea caves vs Blue Lagoon

Sea Cave Tour vs Blue Lagoon Tour: What's the Difference?

The two are often combined — but if you want to understand what each offers on its own.

CriterionSea Cave TourBlue Lagoon Tour
FocusCoastal scenery, caves, photographySwimming and snorkelling at Comino
DurationUsually shorter (1.5–3 hrs)Half-day to full-day
SwimmingOptional, cave-adjacentThe main activity
Best forShort on time, scenery-focusedBeach and swim-focused visitors
CrowdsUsually quieterBusier in summer at the lagoon

Good news: most operators combine both in a single route — passing through the caves on the way to a longer swim at the Blue Lagoon. See our Blue Lagoon vs Crystal Lagoon comparison if you want to understand the swimming options side by side.

The cave cruise we'd book first

The Best Sea Cave & Blue Lagoon Tour We Recommend

A Comino cruise that includes the Santa Maria sea caves, the Blue Lagoon and the Crystal Lagoon in one half-day outing.

Top pick · sea caves, Blue Lagoon & Crystal Lagoon

Comino: Blue Lagoon, Crystal Lagoon & Seacaves Catamaran Tour

From $34 4.6 (6,500+ reviews) Half day · catamaran Free 24-hour cancellation

Why we recommend it: with 6,500+ reviews it's the highest-reviewed Comino catamaran on the market, and it specifically includes the Santa Maria sea caves alongside the Blue Lagoon and Crystal Lagoon swim stops — from $34 with free cancellation up to 24 hours before.

The catamaran format means more deck space for photos at the cave entrances, a waterslide for swimming back onboard, and an onboard bar for the sail home. This is the tour to book if you want to combine the Blue Lagoon swim with a proper cave stop — rather than just a distant pass. Want to add Gozo to the same day? See the full-day option below.

  • Santa Maria sea caves photo and swim stop
  • Blue Lagoon swim with time to snorkel
  • Crystal Lagoon included on the same route
  • Spacious catamaran with waterslide and sunbeds
  • Free cancellation up to 24 hours in advance

Check live dates and book below. For a shorter cave-focused cruise, see the all-Comino option below.

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When to go

Best Time to Visit Malta's Sea Caves

Timing and sea conditions make more difference to cave visits than almost anything else.

Morning light

Early morning tends to produce the clearest, most vivid blue inside the caves, before the sun is directly overhead and the light angle changes. Many boat tours leave between 9–10am to catch this.

Sea conditions

Caves can be difficult or unsafe to enter on choppy days, so tours may slow-pass rather than stop, depending on the swell. Captains adjust the route for safety — treat the cave swim as a bonus, not a guarantee.

Season

Most cave-inclusive boat tours run April/May through October. The Santa Maria Caves at Comino are included on the majority of Blue Lagoon tour itineraries across this window.

Peak months

July and August bring the warmest water and the fullest sun, but also the most boats near the caves. If you want a quieter experience, May, June or September offer the same caves with noticeably fewer visitors.

Crystal Lagoon connection

The Crystal Lagoon — Comino's quieter, cliff-ringed twin — is a short sail from the Santa Maria Caves and offers similarly clear, cave-adjacent snorkelling away from the main Blue Lagoon crowd.

Shoulder season advantage

In May, June and September the water is warm (22–26°C), the cave light is clear, and there are far fewer day-trippers — arguably the best conditions for unhurried cave photography and snorkelling.

Pack this

What to Bring for a Sea Cave Boat Tour

Sea caves reward a little preparation.

Bring with you

  • Swimwear — most cave stops are swimmable in calm conditions
  • A waterproof phone case or action camera for cave photography
  • Reef-safe sunscreen — the open water stretches between caves get full sun
  • Snorkel gear if you want to explore beneath the surface at the cave entrances
  • Water shoes for rocky entry points near Santa Maria Bay

Don't assume

  • That all tours guarantee cave entry — conditions vary and captains may skip
  • That snorkel gear is provided — check the tour listing before booking
  • That the caves are quiet at midday in summer — Santa Maria gets busy
  • That card payment works at Comino — bring cash for onboard or island kiosks
More ways to explore

Add Gozo or Spend More Time on Comino

Combine the sea caves with a full island-hopping day, or stay Comino-focused for the best snorkelling time.

Comino-only · more time at the caves

The half-day swim: Blue Lagoon, Crystal Lagoon and sea caves

Comino-focused cruises that skip Gozo and spend almost all their time on the water — Blue Lagoon swim, Crystal Lagoon photo stop and the Santa Maria caves. More time snorkelling the caves than a longer Gozo tour allows.

See all Comino & Blue Lagoon cruises →
A snorkeller in clear shallow water at Comino, near the sea caves and Blue Lagoon
Best Comino-only pick Malta: Comino, Blue Lagoon, Crystal Lagoon & Cave Tour ★ 4.9 · 1,000+ reviews · From $27 · Luzzu Dream Wave Check availability
Common questions, answered

Malta Sea Caves: Frequently Asked Questions

Are Malta's sea caves the same as the Blue Grotto?

No — the Blue Grotto is a separate, well-known site on Malta's south coast with its own short boat trips from a fixed departure point near Wied iż-Żurrieq. The sea caves in this guide refer to the caves along Malta's northwest coast and around Comino — particularly the Santa Maria Caves — which are typically visited as part of Blue Lagoon boat tours departing from Bugibba, St Paul's Bay or Sliema.

Can you swim inside Malta's sea caves?

Many of the caves are swimmable, particularly the shallower ones near Santa Maria Bay on Comino, where the water is clear and shallow enough to snorkel right into the cave entrances. Conditions depend on the day — captains will skip cave entry or swimming if it is rough or unsafe.

Do all Malta boat tours include sea caves?

Not all — some tours focus purely on the Blue Lagoon swim stop and may only offer a distant view or no cave stop at all. If seeing the caves is a priority, check the itinerary before booking and look for listings that specifically mention the Santa Maria Caves or northwest coast caves.

How long does a sea cave boat tour take?

Standalone coastal or cave tours typically run 1.5–3 hours; the caves are also commonly included as a scenic or swim stop within longer Blue Lagoon or Gozo island-hopping tours that run 4–8 hours in total.

Is cave exploration safe for non-swimmers?

Yes — most tours let you view the caves from the boat without getting in the water, so non-swimmers can still enjoy the scenery, colours and photography from on deck. Swimming into the caves is optional and usually calm near the surface.

Which Malta sea caves are best for snorkelling?

The Santa Maria Caves near Santa Maria Bay on Comino are the most popular for snorkelling — clear, shallow water with visibility often over 20 metres away from the busiest boat traffic. The Crystal Lagoon area nearby is also excellent for cave-adjacent snorkelling in calmer, cliff-ringed water.

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See Malta's sea caves up close

Book a Malta Cave & Blue Lagoon Boat Tour

Book a Comino cruise that includes the Santa Maria sea caves, the Blue Lagoon swim and the Crystal Lagoon — with options for a half-day or a full Gozo island-hopping day.

  • Santa Maria sea caves, Blue Lagoon and Crystal Lagoon on one route
  • Best-reviewed Comino catamaran — 6,500+ reviews, from $34
  • Free cancellation up to 24 hours before on most tours
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