Cephalopod Catch/Chl-a Geodistribution

This image shows 1997 total Cephalopod catch on sea surface chlorophyll-a concentration in 4 different areas,
NE Atlantic, Portugal coast, Saharan Bank, and SE Mediterranean.

Chl-a distribution (red:higher and blue:lower Chl-a).
Chl-a image source: SEASTAR/SeaWiFS