Dolphin Reef Video Slot


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This promotion is for new customers only. Customers must be 18+. Customers must be residents of the UK/IE.


New customers only aged 18+. Minimum deposit £10. Get a Casino Bonus matched to your first deposit, up to £100, after you stake £20 on slots, credited within 48 hours. Bonus expires in 7 days and has a 40x wagering requirement. Additional T&Cs apply. Please bet responsibly.


New customers & 18+ only. Min. deposit of £10. Qualifying real money bet of £10. Min odds greater than or equal to 1.5 required. E/W bets excluded. Offer credited within 48 hours. Additional T&Cs apply. Please gamble responsibly.


#AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18, Please Gamble responsible.

Going to watch the dolphins in their natural habitat is a fascinating experience. While Online Casino sites aren’t going to take our UK players to the reef, they can bring the Dolphin Reef to you. Of course, we’re talking about the 20-payline underwater-themed video slot that prominently features these brilliant mammals. 

Dolphin Reef has more than just dolphins swimming on the reels. You’ll see many underwater creatures as you spin the reels for real money. The game’s highlight is bonus spins with expanding wilds that can help increase your odds of winning the jackpot.

Game Features

  • Game Type: 5 reels, 3 rows, 20 paylines
  • RTP: 95%
  • Volatility: Medium
  • Theme: Underwater
  • Release Year: 2009

Play for Real Money

Dolphin Reef is a real money slot game. To have a chance at winning any money, you will need to open an online casino account and make a deposit. To get started; click on the “JOIN” button on your chosen casino’s homepage and enter the required information. Next, you can easily deposit money into your account by selecting your preferred payment method in the secure Cashier portal. Once the money is in your account, you can start playing Dolphin Reef for real money right away. As an added incentive, you may also receive a Welcome Bonus with your first deposit. Visit your casino’s Promotions page for the latest bonus information.


Dolphin Reef has a £10,000 jackpot that you can win on any spin. You will need to make the £40 max bet and have 5 of the top-paying clownfish symbol land across an active payline.  


Before each spin, you’ll have the option to change the number of active paylines from 1-20. Only active paylines can trigger a payout. Dolphin Reef has an auto spin feature that allows players to enjoy up to 99 games without changing their stake or the number of paylines. If you want to increase the speed of each game, you can activate the Turbo feature. 

  • Coins: There are 16-coin sizes to choose from, ranging from 1p to £2 per line. The total bet is based on the coin size and the number of active paylines. For example, to make the minimum 1p bet, you’ll want to choose the 1p coin and only activate the centre payline. If you’re going to place a £40 max bet, you will need to play with all 20 paylines and use the £2 coin.
  • Symbols: Dolphin Reef has four aquatic-themed high-value symbols; clownfish, sea turtle, starfish, and sea horse. The clownfish is the most valuable of these symbols, with a max payout of 5,000x the line bet. The sea turtle can payout up to 1,000x the line bet, and the starfish and sea horse both payout up to 500x.

    The six low-value symbols are playing card symbols; A, K, Q, J, 10, and 9. These have a max payout range from 100 – 250x the line bet.  You can see the complete paytable in the chart below. 
  • Wild: The most important symbol in the game is the dolphin. It’s a wild symbol that swims on the 2nd and 4th reels. Not only will it substitute for all regular symbols, but it can trigger a bonus spin feature.
  • Scatter: A treasure chest is the scatter symbol, and it starts paying out when at least three are on the reels at once.
Symbol2x on Reels3x on Reels4x on Reels5x on Reels
Sea Horse2x20x100x500x
Scatter (Based on the overall bet)-3x10x100x
  • Bonus Features: The wild dolphin symbol will trigger five bonus spins when it lands on the 2nd and 4th reels simultaneously. Before the spins begin, the dolphin symbol will expand and cover their entire reels.

Mobile and Software Experience

Playtech developed Dolphin Reef to work with computers and mobile devices. When playing on an Android or iOS device, you’ll enjoy the same high-quality graphics and animations you would on a larger computer screen. The buttons were resized to fit on the smaller screens, and you’ll need to click a ‘coin’ icon button to make changes to your wager or adjust the number of paylines. You can play this slot game in landscape or portrait mode, but with landscape mode, the symbols are larger, and everything is a bit easier to see.


With two expanding wilds that stay frozen on the reels during the bonus spin, it’s no wonder Dolphin Reef has become one of the most popular UK online slots. Register your online casino account and claim your Welcome Bonus and play for real money today.