Dolphin Numbers Still Low Despite Safe Tuna Fishing

From the 1950s to the 1970s tuna fishers killed millions of spinner and spotted dolphins caught as bycatch. Today NOAA-led teams regularly survey the ecosystem of the eastern tropical Pacific Ocean searching for clues as to why dolphin populations there have yet to recover despite nearly 20 years of friendlier fishing practices. This news article from National Geographic News <Story: http://news.nationalgeographic.com/news/2007/03/070326-dolphins.html The previous link is a link to a non-Federal government web site. Click to review the NOAA Fisheries disclaimer.> cites a SWFSC researcher (Dr. Lisa Ballance) in the discussion of relevant research.