What is the minimum number of fish a 3m long bluefin tuna would have to eat to fuel a non-stop voyage across the Atlantic in two weeks if they traveled at 14.88 km/hr on average? How often would prey fish need to be captured during this voyage? Assume a travel distance of 5000 km and that the tuna can extract 1000 kJ of energy from each prey fish. You may also assume that the body is elliptical in cross-section, that the body height is 1/4 the body length and the body width is 1/8 the body length.
Answer: The tuna must eat at least 57 fish.Given that this occurs over 2 weeks, the tuna must eat at least 4.05 fish each day.
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