Macrourus berglax shrimps, amphipods, polychaete worms, bivalve molluscs, isopods, brittle stars, other echinoderms and comb jellies. The roughhead grenadier is a slow growing fish. The females mature at an age of about 14 years and a length of while males reach maturity at a length of . The potential fecundity of the female is 17,000 to 56,000 eggs. The eggs are laid in batches and spawning takes place at any time of year, with a peak in late winter and early spring. The roughhead grenadier is landed as a by-catch when fishing for Greenland halibut ("Reinhardtius hippoglossoides") and Atlantic halibut ("Hippoglossus hippoglossus").
The World Is Flat Science, wrote another critical review of Friedman's book called "The World Is Round". In it, Gray confirms Friedman's assertion that globalization is making the world more interconnected and, in some parts, richer but disputes the notion that globalization makes the world more peaceful or freer. Gray also declares, "least of all does it make it flat". Geographers on the whole have been particularly critical of Friedman's writings, views influenced by the large body of work within their field demonstrating the uneven nature of globalization, the strong influence place still has on people's lives, and the dependent relationships that have been