Revealed: How BBC's Blue Planet II used a camera with SUCTION CUPS to stick onto a mighty sperm whale and show its intimate family relationship to the world <br />Whale life is complex and they live across world's oceans, roving 50 miles a day <br />Finding and staying with a sperm whale family team's biggest challenge <br />With the help of an expert they were able to use cameras with suction cups <br />The team said they were 'hardly ready for what they saw' when footage came <br /> <br />advc4245 fkghj45 <br /> <br />Read more: http://www.dailymail.co.uk/news/article-5095947/Blue-Planet-used-camera-suction-cups-film-whales.html#ixzz4z1Bridlz <br />Follow us: @MailOnline on Twitter | DailyMail on Facebook