9 x 9 Under The Sea Sudoku

Here is a our Under The Sea themed Sudoku. Use the buttons below the Sudoku to create another, adjust the difficulty, view the solution or print as a worksheet.

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9 x 9 Under The Sea Sudoku

Our oceans cover over 70% of the Earth's surface. Of all the habitats on Earth the oceans hold the most mystery. While we are aware of hundreds of thousands of marine life forms there are still many more still to be discovered.

It's under the sea "submarine" Sudoku - fill in the grid with the letters S, U, B, M, A, R, I, N and E, making sure no letter is repeated in every row, every column and within each mini grid.

We also have traditional number Sudoku for you in either 4x4 or 9x9 sizes. Visit our Sudoku page.