Giant Cuttlefish

Scientific name: Sepia apama

The world’s largest cuttlefish is one of the more interesting sea creatures we encounter on our dives. Topping out at a shade over 10kg and approximately 50 cm in length once full grown, the Australian giant cuttlefish is known for its spectacular colour changes and friendly disposition.

Meet the friendly giant cuttlefish on our next Sydney dive

These odd looking invertebrates make for interesting diving companions. They’re active during the day and will be attracted to bright colours and may follow divers with lights for several minutes.

During the mating season, they will welcome touching by divers as they’ll likely associate a diver’s hands to the tentacles of potential mates. 

Join us for a great Sydney dive

Beyond cuttlefish, Sydney Dive Charters will take you on an epic voyage under the sea in and around Sydney Harbour. Check out our top Sydney shark diving spots to see what’s on offer!

Quick facts about the giant cuttlefish

    • Giant cuttlefish have a short lifespan of two to four years. Many will die after the mass gatherings taking place during breeding season.
    • Crabs, crustaceans and small fish are on the menu for these masters of camouflage.
    • Not only can giant cuttlefish alter their appearance by raising parts of their skin to change colour, they can also mimic their environment (rocks, sand and seaweed) by contorting themselves to resemble the shape of their surroundings!
    • Giant cuttlefish spawn from April to September (peak spawning occurs in May and June.)
    • During breeding season, smaller males will imitate a female’s colours to sneak past their larger male rivals in the hopes of interacting with female cuttlefish.
    • Female cuttlefish do not guard their eggs. They’ll leave them attached to the underside of rocks in caves to hatch in three to five months.
    • As their eyes are quite large relative to their body shape, they are thought to communicate visually with their fellow cephalopods.

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    Sydney Scuba Dive Costings

    All prices include GST. Prices are per person.

    Single Dive $69.00
    Single Night Dive $69.00
    TSS Currajong Night Dive $120.00
    Double Boat Dive $120.00
    Technical Tec 1 Dive (40-51m) $99.00
    Tec 1 Dive + 1 Recreational Dive $120.00
    Technical Tec 2 Dive (51-78m) $150.00
    Tec 2 “Peak” Dive $950 (full boat rate. max 6 divers)
    Ex – HMAS Adelaide Double Dive $120.00
    Freediving $220.00ph (10pax max)
    Whale Watching $65.00
    Charter Rate $POA
    Freediver $120.00 pp

    I had an awesome couple of dives on the Ex-HMAS Adelaide for my 100th dive. It was an amazing experience thanks to Jason’s excellent boat and service, his detailed briefing really helped me navigate the ship wreck.

    Jono Page

    We dive regularly with Jason. He really looks after us. Great diving. Love the boat. Dives run on time which let’s us get to work after our dives.

    Mattuis and Ulli

    I’ve chartered Sydney Dive Charters for my company’s annual Christmas party and we had a great time, the boat is great and Jason really went out of his way to accommodate our needs. I will definitely be back on board this year!

    Chris Brown

    “I’ve been diving with Jason aboard Sydney Dive Charters dive boat for nearly 3 years now and I keep coming back. I’ve had the pleasure of exploring and enjoying some of the best technical wrecks in the Sydney Region.  The boat makes for comfortable, easy diving – which when coupled with Jason’s local knowledge provides a complete service. There is nothing better than diving on a boat when you know the skipper is first and foremost a diver himself”

    Chris Paul

    Sydney Dive Charters