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Fig. 1. (A) Absorbance spectra of visual pigment extracted from the retina of
Bathysaurus ferox measured in unbleached and bleached states at
pressures of 0.1, 9.0, 20.0, 31.0 and 45.8 MPa. For clarity of presentation
all scans have been zeroed at 700 nm. (B) Difference spectra for each pressure
constructed using the curves shown in Fig. 1A. Scans have been zeroed at the
minimum long-wave absorbance (see Hart et
al., 2000).