Headquarters for Ocean Policy, Government of Japan
Action of Japan to the drifting matters washed out by the March 11 Earthquake (so-called '3.11 Tsunami Debris')
http://www.kantei.go.jp/jp/singi/kaiyou/hyouryuu_eng.html

NOAA Marine Debris Program
http://marinedebris.noaa.gov/

International Pacific Research Center: Marine and Tsunami Debris
http://iprc.soest.hawaii.edu/news/marine_and_tsunami_debris/debris_news.php

Oregon State University
http://oregonstate.edu/

Mystic-Williams College
http://mystic.williams.edu/

Smithsonian Environmental Research Center (SERC): Marine Invasions Research Lab
http://www.serc.si.edu/labs/marine_invasions/

State of Alaska DEC Japan Tsunami Debris Survey
http://www.arcgis.com/home/webmap/viewer.html?webmap=8ac40a055c5349b19e20cf84fdbeacf0

Webcam images
http://nilim-camera1.eco.coocan.jp/webcam/newport/index.php