BBC Blue Planet Prom In The Park, Sun 15 Sep. Gates 7.30pm, £15. Tickets for all events 9am-9pm from Royal Albert Hall, Kensington Gore, SW7 (020-7589 8212), 24-hour ticketline until midnight Sat 14 Sep, 0870 899 8001, www.bbc.co.uk/proms, in person from BBC Shops, Portland Place, W1 and Bush House, The Strand, WC2.