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Bottlenose dolphins and humpback whales seems to play with each other around the islands of Hawaii.
Some really nice pics are taken with a dolphing riding the head of the whale
Love it! Looks to me this is just nothing else then having fun time in the big blue ocean.
Although I have seen dolphins playing with bubbles or small items, never saw this before.
Enjoy!
Source: BIO NEWS, science bulletins, American museum of natural history by AMN Horg