The big difference between the two species is that we keep seeing more or less the same bottlenose dolphins and have identified very few new animals since mid-June. Whereas, the Heaviside's dolphin catalogue continues to grow. They're much harder to photograph and not nearly as well marked.
I've put up pictures below of our two "star performers": T-029 a bottlenose that we've see a grand total of 8 out of the 13 days that we've seen bottlenose so far and C-022, a very boat friendly and photogenic Heaviside's dolphin that we've now seen on 6 different days!
The difference in how "boat friendly" individual dolphins are is a problem for the mark-recapture analysis we're trying to do as, unless we can account for it, we will be severely biasing the resulting abundance estimate (downwards) because we are oversampling some members of the population and undersampling others which are less boat friendly. The best way around this is try to 'capture' the entire population. So...we're back out tomorrow.
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