Tsunami Dock

Tsunami Dock

Credit: Oregon Department of Parks and Recreation

This floating dock washed ashore near Newport. Ore. on June 5.

Adrift Dock

Adrift Dock

Credit: Oregon Department of Parks and Recreation

The dock that washed ashore in Oregon is 66 feet long and covered with an estimated ton of marine life.

Dock Plaque

Dock Plaque

Credit: Oregon Department of Parks and Recreation

An engraving on the dock allowed officials to trace it back to Japan.

Dock Wakame

Dock Wakame

Credit: Oregon Department of Parks and Recreation

Wakame, a known invasive seaweed, clinging to the "tsunami dock" on an Oregon beach.

Exotic Mussels

Exotic Mussels

Credit: Oregon Department of Parks and Recreation

Among the species on the Japanese dock are these exotic mussels (Mytilus edulis or M. galloprovicialis) and unknown barnacles.

Dock Fauna

Dock Fauna

Credit: Oregon Department of Parks and Recreation

A view of the mussels and barnacles that cling to the Japanese dock.

Acorn Barnacle

Acorn Barnacle

Credit: Oregon Department of Parks and Recreation

An exotic pink Japanese acorn barnacle on the dock that washed ashore in Oregon.

Tsunami Boat

Tsunami Boat

Credit: Kevin Head

In this photo released by NOAA, a boat lost in the Japanese tsunami of 2011 sits onshore on a remote Canadian island. The boat was discovered Aug. 9, 2012.