From March to April
March and April see Humpback and Grey Whales migrating past the Cape Verde Islands.
From November to June
From November to June there is a good chance of seeing Hammerhead, Zambezi, Bull and Tiger Sharks at Protea Banks, South Africa.
From December to April
Manta Rays are found on the west side of the Maldive atolls from December to April. The best time to dive in the Maldives is from January to April.