Even in the UK you can find fishing jobs that pay £1500-2000 a week during peak season which means you can earn what Amazon pays in 2.5 months but it’s much harder than sorting items at a warehouse.
http://www.telegraph.co.uk/business/2017/08/07/deadliest-job...
According to the industry's trade body, Seafish, there are 126 deaths per 100,000 fishermen each year; "many times higher" than any other sector of UK industry
http://www.hse.gov.uk/agriculture/pdf/ag-fatal-1617.pdf
Also please note the the vast majority of injuries and fatalities seems to be in farming rather than fishing those statistics are unified but the causes are broken down.
The individual deaths and causes are also listed http://www.hse.gov.uk/foi/fatalities/2016-17.htm I couldn't find one that related directly to fishing.
Don't get me wrong fishing is dangerous but I haven't seen anything that would indicate that it's one of the most dangerous jobs in the UK.
I think I would happily do that if it paid well enough so that I only had to work, say, three months or less a year.