Behind Blue Planet

SIR – Your headline “Attenborough riding a wave” (report, October 30) is a true reflection of this superb programme.

It is just a pity we don’t know who the many experts that have put it together are, due to the excessive speed of the on-screen credits. Nicholas Fowle

Norwich

SIR – Elizabeth French (Letters, November 1) recommends watching Blue Planet II with subtitles.

While doing this I was confused by references to “policies” until I realised they meant “polar seas”. Robin Adams

Kintbury, Berkshire