Simon Berrow Posted about 3 years ago Simon Berrow: How do you save a shark you know nothing about? Junichi Parker and Boeseman (1954) estimated a basking shark could filter 1500 cubic metres per hour. More recently simms (2008) has revised that estimate down by 41%, but I guess the truth is we are still trying to work this simple statistics out. No need to be abusive and personal. I think I produced a lot of facts and figures in a short talk and sometimes the analogies don't always work.