<i id='B5AE5F3E5F'><strike id='B5AE5F3E5F'><tt id='B5AE5F3E5F'><ins date-time="bf3efc"></ins><small dir="688c0a"></small><sup lang="dfbe1c"></sup><pre date-time="1e963e" id='B5AE5F3E5F'></pre></tt></strike></i> By Helen Briggs and Victoria Gill for BBC News
A humpback whale. Photo: konart/123RF
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