Crocus’s Bounty at an unknown amount of Berries

What earns Crocus a bounty is, in all likelihood, short enough to say in one line: he served aboard the Oro Jackson. The World Government has never lifted the bounties on the Roger Pirates and will not lift them until their holders are dead. It presumably prices less his trade — he was a doctor — than the crew he sailed with.

His trade was not a small matter either. Silvers Rayleigh calls him the finest doctor in the world of his day, and the only one who could hold back, even temporarily, the incurable illness eating at Gol D. Roger. He brewed the medicine himself and in quantity, told his captain off for drinking through it, kept Buggy off the crossing to Laugh Tale over a sudden fever, and eventually informed Roger that he had a year left.

He had not signed on for Roger, though. Some twenty years earlier the Rumbar Pirates had left a whale calf in his care, Laboon, promising to come back for him once they had rounded the world, and they never came. Crocus took the ship's doctor's berth because a vessel crossing the Grand Line gave him a chance to pick up their trail. He did pick one up, and he read it wrong: reports of Rumbar men trying to slip out through the Calm Belt led him to conclude they had simply run.

That is the answer he carried back to the Twin Cape lighthouse. Laboon refused to believe it and started ramming Reverse Mountain; Crocus, having nothing better, cut tunnels through the body of an animal grown too large for ordinary treatment and built him an artificial island inside his own stomach. He has been waiting there ever since, at the foot of Reverse Mountain, at the very mouth of the Grand Line, hiding from nobody.