From the Independent:
Its many fans call it black gold, and with good reason. The price of wild caviar has shot up by 60 per cent over the past 12 months, prompting a smuggling boom that has thrown the survival of sturgeon into doubt. The illegal trade in the little black eggs is worth an estimated [...]

The BBC has a report on modern day pirates and the various activities they undertake to earn money.
From BBC News:
According to the International Maritime Bureau, which runs the piracy-reporting centre in Kuala Lumpur, pirates attack different kinds of vessels for a variety of reasons.
In Nigeria, pirates tend to attack vessels involved in the oil [...]

The illegal fishing trade is supplying the eating habits of Europe as fishing supplies has dwindled in the region.
From the International Herald Tribune:
In Europe, the imbalance between supply and demand has led to a thriving illegal trade. About 50 percent of the fish sold in the EU originates in developing nations, and much of it [...]

Time Magazine has a report on the illicit trade in caviar:
The illegal trade ranges from private individuals flogging jars of caviar at open-air market stalls to well-organized smuggling operations, with paid couriers picking up pre-packed black market roe for delivery to specified customers.
The trade in illegal fishing is estimated to be valued between $4 to [...]