As an aside we went to see the new David Attenborough film Ocean over the weekend. Equal parts stunning and heartbreaking - it sews a compelling narrative for the oceans, spread between climate and ocean ecology, the extent of our exploitation, and the renewed hope (if you could call it that) that it holds for humanity's survival ...
A hard watch but also a must see: https://www.youtube.com/watch?v=cIZAdCtKT_g