Loop Multidimensional Array

/** Example Multidimensional Array */
var creatures = [['dog', 'cat', 'pig'],['fish','whale','shark']];

/** Example Function */
arrayLevel = 0;

function loopArray(array) {
        var length = array.length;
        for (var i = 0; i < length; i++) {
                if (array[i] instanceof Array) {
                        /** Recursion */
						arrayLevel++;
                        loopArray(array[i]);
                }
                else {
                        console.log('[arrayLevel: '+ arrayLevel + '] ' + i + ' -> ' + array[i]);
                }
        }        
		arrayLevel = 0;
}

loopArray(creatures);