Blue Planet II viewers were crying their eyes out as a whale carried its dead newborn around - killed by human activity. Sir David Attenborough explained we "dump eight million tonnes of plastic into the sea" every year, and it "entangles and drowns a vast number of creatures". The BBC documentary then cut to a group of whales - and closed up on one in particular. PROMOTED STORIES Will I Ever Get A Heart Attack? Know Your Risks And 6 Tips To Help doctor.ndtv.com Get Homeopathic treatment For hairloss Consult At Just Rs.250 Dr.Batra's The Ultimate Way to Get Cheap Hotel Rooms! Save70.com Try This Every Day to Regrow Hair Easily(Watch) Nutralyfe ReGain by Taboola Sponsored Links David said: "This mother has been carrying her newborn around, but it's dead. "She's reluctant to let it go, it's been dead for many days." READ MORE Filming Nemo! Incredible underwater secrets of the Blue Planet crew Pilot whale carries its dead newborn calf on Blue Planet 2 The pilot whale carried around its dead calf for days (Image: BBC) Discarded plastic is found throughout the ocean and has a devastating impact on marine life (Image: BBC) He then continued to explain how plastic breaks down and becomes toxic, making it "lethal" to top predators like these whales. David said: "The calf may have been poisoned by the mother's own contaminated milk." As a group of slow-moving whales were shown, he continued: "Pilot whales have big brains, and they can certainly experience emotions. "Judging the adults, the loss of the infant has affected the entire family." READ MORE Move over Jaws: This week's Blue Planet villain is an 'evil' phallic-shaped worm named the... Bobbit The scenes were extremely emotional (Image: BBC) The whales showed signs of grieving (Image: BBC) Blue Planet viewers were devastated by the cruel effects of throwing plastic into the sea. One said: "Am heartbroken at the sight of the whale and her dead calf. We must do more to stop this." Another cried: "The most heart breaking thing I've ever seen, the whale mother carrying her dead baby made me cry like a baby but made me realise we need to do something about this now A third sobbed: "Mumma pilot whale carrying her dead baby is heartbreaking. So sad. Please god can humanity change its actions." Others were angry, calling for people to change. One wrote: "The amount I’m crying over the baby whale dying in #BluePlanet2 because he ate plastic, I’d make a new ocean with them for the whales and ban humans." Dragons Den star Deborah Meaden tweeted: "A grieving pilot whale carrying her dead baby for days.... oh I can't bear it.We have to change." *Blue Planet continues on BBC1 at 8pm on Sunday dailymirrortv Follow @MirrorTV Subscribe to our Celebs newsletter Enter email PROMOTED STORIES Will I Ever Get A Heart Attack? Know Your Risks And 6 Tips To Help doctor.ndtv.com Get Homeopathic treatment For hairloss Consult At Just Rs.250 Dr.Batra's The Ultimate Way to Get Cheap Hotel Rooms! Save70.com Simple Method "Regrows" Hair. Try It Tonight Nutralyfe ReGain Make your Child Learn English with this App (30-Day-Free-Trial) Download on the App Store | Lingokids App Fair Market Value of Any Used Vehicle in 10 Seconds For Free. Check Now! Orange Book Value by Taboola Sponsored Links 6Comments Sign In Sort Comments 22 MINUTES AGOLunamama How many people who watched last night are going to make effective change? Buy bamboo toothbrushes, metal/bamboo straws, not use plastic bags in fruit and veg etc etc. It's all very well getting upset but are you/we going to change? ReplyShare00 58 MINUTES AGONickDulic Humans will destroy the Planet, ultimately. ReplyShare10 3 HOURS AGOHenrysonHenry No proof it was plastic that did this. ReplyShare25 9 HOURS AGORamessesBrydson haven't bothered with Attenborough for years, all dying animals in glorious slow motion HD ReplyShare33 10 HOURS AGOTerryNorman BAN ALL PLASTIC NOW !!!!!!!!!! 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