The Savage Tide

The adventurers have never experienced a Savage Tide, but have witness the results of one when they visited Karken Cove and recovered The Sea Wyvern during the events of The Bullywug Gambit there they saw hideously deformed creatures of all shape and size transformed by the chaos energy released from a huge black pearl that Vanthus Vanderboren accidentally shattered.
They again encounter the threat of a Pearl during the Crimson Fleets invasion during when Vanthus Vanderboren threaten to release it upon Farshore before being mercilessly slain.

Pearl
an artists impression of an intact pearl

The cargo manifest of The Sea Wyvern indicated the pearl was destined for Sasserine.

The Savage Tide

The Savage Tides Zombieboots