Open ocean 'surface slicks' serve as nurseries for dozens of fish species By (0) A composite image shows a small portion of the diversity of larval and juvenile fishes and invertebrates found living in surface slick nurseries along West Hawaii Island. Photo by Jonathan Whitney/Joey Lecky/NOAA Fisheries Feb. 4 (UPI) -- For newly hatched and juvenile fish, the open ocean can be a harsh environment. Upon hatching, young fish find themselves in a bewildering expanse of blue, filled with strong currents and predators, and with no place to hide. Until n...