In order to observe those magnificent mammals that are whales, you will have to go further out to sea though it will depend a lot on weather and sea conditions. It will be difficult to see the whales when the sea is rough.
On the Mauritian coast, two different types of whales can be seen:
(1) Humpback whales in winter period (July – Sep / Oct)
(2) Sperm Whales which are considered as resident on the west coast of Mauritius