According to German customs, they may have come from a failed transfer at sea. Another theory is that the packages may have been attached to the outside of a boat and then accidentally detached.
The cocaine was discovered by passersby, according to local media.
A spokesperson for the customs office says that the drugs have a street value of at least 40,000 euros per kilo, equivalent to approximately 461,000 kronor. The total value of the cocaine is estimated to be six million euros.
The German police have been in contact with the police in Denmark, who report that no drugs have been washed up on land in the Danish part of the Wadden Sea. An investigation into the origin of the cocaine has been initiated.
The customs office has previously stated that cocaine smuggling in the northernmost federal state of Schleswig-Holstein is increasing.