The first comprehensive count of harbour seal pups has found there are 138 newborns along the sandbanks and creeks of the outer Thames Estuary
Source:
https://www.newscientist.com/article/2214891-harbour-seals-are-breeding-in-the-river-thames-and-have-had-138-pups/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home