There is evidence that other apes, such as gorillas and orang-utans, show cultural differences, as well as creatures such as whales and dolphins.

BBC: Cultural habits of chimps

Well-known marine animals, such as whales or dolphins represent a tiny fraction of marine biodiversity.

UNESCO: THEMES

To date, most research has focused on the impact sound might have on marine mammals, such as whales and dolphins.

BBC: Earth News - 'Noise pollution' threatens fish

While other species such as Indo-Pacific humpback dolphins and Indo-Pacific bottlenose dolphins are not currently threatened, their future can by no means be taken for granted.

BBC: NEWS | South Asia | Bangladesh's majestic dolphins at risk

Apart from a few large-brained species, such as humans, apes and dolphins, not many animals will do this, but Kandula did it without hesitation, fetching the box from great distances.

WSJ: The Brains of the Animal Kingdom

In terms of dolphin math skills, prior studies conducted by the Dolphin Research Cetner in Florida have already determined that dolphins grasp various numerical concepts, such as recognizing and representing numerical values on an ordinal scale.

MSN: Dolphins appear to do nonlinear mathematics

You might imagine that a 13-year-old girl would talk about emotive things like dolphins and rainbows, and talk in pink generics such as "making the world a better place".

BBC: Rio: Imagineering the future

"Currently, the Navy uses dolphins or divers feeling with their hands in such difficult conditions as near-shore bubbly water, for example in the Gulf, " he said.

MSN: Dolphins appear to do nonlinear mathematics

On those scores it is not different from discredited autism therapies such as chelation, listening to Mozart, gluten-free diets and swimming with dolphins.

FORBES: New Hope For Autism