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Aquatic Tips and Discounts

Underwater Island - Our Best Seller

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5.00 LBS
Calculated at checkout

Product Description

Wow your audiences with The Underwater Island, our biggest and most impressive underwater habitat. Our Underwater Island is complete with asmall river running through the middle, and sporting almost over 100 sq/in of playspace for your underwater critter of choice.  This is the true paridise. Ideal for tanks 10 gallons and bigger.

Comes with:

  • 1 Underwater Island
  • 1 Airline Kit


  • Overall Height: 7in
  • Base Dimensions: 12.5in x 10in
  • Livable Habitat Height: 5in
  • Livable Habitat Dimensions: 9.5in x 7in

Weight: 3  lbs.

Product Videos

Atlantis Promo Video (05:59)
All of our units in one video.
  • Atlantis Promo...
    All of our units in one video.

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Product Reviews

  1. Bigger and better than expected 5 Star Rating

    Andre Ollivier on

    I am in the process of setting up a fish tank and was interested in having crabs in the tank.
    The person at the pet store discouraged crabs in fish tanks saying that they needed dry land and would escape.
    Upon searching, I happened along your website and included your underwater habitat in the design.
    Originally, I had planned to place the habitat in the corner and planned to hide it with plants and decor but it looks way to nice for that and is now moved to a more prominent spot for better visibility.

    The ability to feed the crabs in the habitat with the optional feeder tube is fabulous.

  2. Great for our crabs! 5 Star Rating

    Unknown on

    We have four crabs in our 75 gallon aquarium and they love their under water island. This was a great purchase and we're really happy we found it!



    If your having trouble with weighing your island down, try using sand, with fiddler crabs especially. Gravel is less dense and bacteria can spread like wildfire in the gaps between the pebbles, which can lead to frequent cleaning. Product wise this is a must for semi-terrestial crabs if set up correctly. I personally use aquarium sand, and live moss. for natural decomposition of wastes and food.

  4. A COOL BIT OF KIT 5 Star Rating

    Dean Howson on

    GREAT STAFF. GREAT COMMUNICATION. GREAT HELP. I'm in the UK and just so happy with it, all the way from the USA. I read a review from someone who said it was difficult to weight it down. What was he using? Popcorn!!! Buy it. You will NOT be disappointed.

  5. Wonderful... 5 Star Rating

    Royael Joni on

    My gf bought me a fiddler crab and expressed that he would need air. We researched online and found this.Its pretty neat but it needs LOTS of weight to keep it down. Made a trip to walmart to buy two more bags of 5lb gravel to add to the already 15lbs in the tank. It did not keep the island down. We finally decided to use the inserts from our ankle weights to keep it down. It did the trick but i'm wondering what could be used in place because I don't like the idea of the weights inside the island.
    Once you set it up and attach the air tubing to the air pump the water is pushed out of the island but the island itself begins to lift up and float. So be sure to add lots of weight.
    Overall genius product! Really love it and would highly recommend...

  6. Awesome 5 Star Rating

    Sam on

    so happy that all of my aquatic animals find a good use for this we have dwarf frogs newts and crabs they all use this even if its just for the frogs to be able to grab some air quick. also our snails laid eggs in it just above the water line which was a wonderful surprise

  7. works great my crabs love it 5 Star Rating

    Chris on

    Any sea creature that needs air can use this product. That can fit in it that is. Wonder customer service i recieved mine with a broken top and he was so nice to replace the broken part and give me a free feeder tube which i enjoy using too!!!

  8. Love It 5 Star Rating

    Bert on

    A must have if you want crabs in your aquarium,easy install and my red claw crabs found it right away, now they do not need to climb plants to the top for air.First day crab found a dead fish dragged it into the island and had a big meal.

  9. More fun than watching TV! 5 Star Rating

    Unknown on

    We ordered this model after we got some crabs from the store. They don't tell you that they need dry land, but they do. We originally had 2 crabs but after setting this up in our 30 gallon we bought a handful more and they LOVE IT! It is really entertaining watching them climb the palm tree and our Dragonfish like to bask in the river. We plan on ordering a smaller version for our son's 10 gallon, since getting this he has grown to enjoy the crabs a lot and wants his own. Also this has kept our crabbies from climbing the heater and the air tubing, we haven't had any attempted escapes since installing it. A+-really cool product. On top of all that good review- the staff is prompt and helpful if you email a question. I would recommend this to a friend (and have).

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