This may be the most heartbreaking 'Blue Planet II' moment so far

Humans may be a blight on the planet, but we make a damn good nature documentary.

On Sunday night Blue Planet II went into the open ocean, and revealed the devastating effects that plastic has had on our seas.

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Along with shots of marine life tangled in plastic netting, they had one truly devastating story to tell about a mother pilot whale.

The pollution and plastic that gets dumped into the sea is thought to be making whales' milk toxic. This pilot whale's calf died from drinking her contaminated milk, and she refused to let go of her baby.

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The abject tragedy of the scene struck a chord with many viewers:

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The BBC offered some comfort to those of us shocked by the devastation wrought by plastic.

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The BBC also has a page recommending ways to reduce your plastic footprint.

Do it for the baby whales.