I watched David Attenborough's recent film 'Ocean' on a big screen. The footage of bottom trawling was really shocking. I don't understand how that has been allowed to continue in UK coastal waters, let alone to be subsidised in marine protected areas. Madness. It's like napalming a forest to get a few deer. Thankfully things may be changing:
https://www.gov.uk/government/news/government-proposes-to-ex...
Don't know how much of that was due to the film.