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Fig. 5. The fins of Loligo opalescens are triangular; surface area
(SA) of both fins=2(0.5 x fin width x fin length at the
base). The surface area of both fins provides lift that increases
exponentially with the dorsal mantle length ML of the developing
squid. y=2.361x2.214; r2=0.957,
P<0.0001, N=136. The slope of the linear regression line
is 2.361, demonstrating positive allometry, i.e. slope is significantly
different than 2.