Tiggly Submarine "Educational Education Games" Android Apps Game Video. Come join Tiggly in an underwater world of vowel exploration and new word discovery. A hungry octopus, a tinkering turtle, and sea of vowel fish are just some of the hilarious characters you’ll meet and interact with in the app. Tiggly Submarine helps develop children’s understanding of simple words and short vowel sounds. |--| From the team at Tiggly – the creators of the beloved award winning Tiggly Chef and many other apps. download link :.