Bird Blood in Buburimu Peninsula
The Leeches in Buburimu Peninsula is a great way to pull in some extra cash for the lower level player. The Poison Leeches live on the beaches (It's a Rhyme!), You'll find more Leeches on the Bibiki Bay side, rather then the Onzozo side. You'll commonly get 2 drops of Bird Blood from these leeches, which vendors for 400gil making it a great source of income.