While whales are a common site off South Africa’s coastline from June to November, they can usually be seen in small pods.

But almost 50 years after whaling was banned, an extraordinary spectacle is unfolding. Massive supergroups of humpback whales are becoming increasingly common.

Together with dolphins, they are one of at least 37 species of marine mammals that can be found in South African waters.

Cape Town wildlife photographer, Chris Fallow, has been capturing these breathtaking gatherings up close.

He says that out on his boat towards the end of last year, he noticed that whale numbers were steadily increasing.