I've been trying various things, but I've found that creating excel spreadsheets work best.

fin-by-fin and body-by-body to keep track of cross-breeds.

And fin-by-body to keep track of which species were discovered.
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Red Sox--2007 World Champions!
Celtics--2008 NBA Champions!

Isola is a magic island! All sorts of strange things can happen, and often do happen. -- arnie