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The incredible resilience of a mother humpback whale. #SpyInTheOcean #iPlayer

Spy in the Ocean is available on iPlayer in the UK and will be available on PBS in the US from October.

All our TV channels and S4C are available to watch live through BBC iPlayer, although some programmes may not be available to stream online due to rights. If you would like to read more on what types of programmes are available to watch live, check the 'Are all programmes that are broadcast available on BBC iPlayer?' FAQ https://bbc.in/2m8ks6v.