A simple iteration with if else

Iterating through an array of strings i want it to write a specific line if one of the elements coresponds to the condition. The problem is with the else condition. It is written as many times as the length of the array and i only need it written once

 public static void FindSandy(params string[] ocean)
    {
        for (int i = 0; i < ocean.Length; i++)
        {
            if (ocean[i] == "Sandy")
            {
                Console.WriteLine("We found Sandy on position {0}", i);
            }
            else
            {
                Console.WriteLine("He was not here");
            }


        }


    }

    static void Main(string[] args)
    {

        {
            FindSandy("Bob","Bella", "Sandy", "Nemo", "Dory");
        }
    }