There are NOT 365 islands in the lake. From the Bahamas to Granada, from the Bay of Kings in Brazil to Clew Bay, as though by some miraculous geographical coincidence, an astonishing number of places with an excess of islands seem to have exactly 365 of them. A closer approximation of the number of islands in Lough Corrib would be 1,332, although this number changes daily with lake level. Below are some of the named islands and rocks. If something appears twice - there are two of them.