Researchers are trying to learn the effects of the plastic and debris on wildlife . `` It 's relatively sparse , and you might or might not see something visible to the human eye at any particular location out there , '' Knox says . Score: 6 Scientists say this sea-bound trash zone is largest among worldwide debris fields . Researchers believe this enormous trash zone accumulated over many years .
Researchers are trying to learn the effects of the plastic and debris on wildlife . Score: 6 Scientists say this sea-bound trash zone is largest among worldwide debris fields . Researchers believe this enormous trash zone accumulated over many years .