BBC nature series Dolphins - Spy in the Pod features the first ever documentation of dolphins enjoying recreational drug use.

Narrator David Tennant explains to viewers how a group of bottlenose dolphins are getting a narcotic effect from a toxic puffer fish that secretes a neurotoxin.

Watch the clip of the dolphins getting high:

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The short preview clip reveals how the dolphins "pass the puffer around" and then get distracted, leaving the puffer fish to get away.

Spy in the Pod uses cutting edge technology to examine animals in ways they've never been seen before. A previous series in 2013 looked at penguins.



Other events caught on camera in tonight's episode include a bizarre initiation ceremony for young dolphins and a male attempting to woo a female with gifts and charm.



Dolphins - Spy in the Pod airs tonight (January 9) at 8pm on BBC One.

The first episode is currently on BBC iPlayer.

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