What is a major environmental concern associated with the Pacific Gyre Garbage Patch?

• A. Plastics are not biodegradable and harm animals, block sunlight, disrupting the food chain
• B. It cleans the ocean
• C. It creates new coral reefs
• D. It improves fish habitats

Answer: (A)

Plastics persist in the ocean because they are not biodegradable, so they don’t just disappear. In the Pacific Gyre, debris accumulates over time, breaking into smaller pieces called microplastics rather than breaking down completely. This long-lasting presence means wildlife can mistake plastics for food, leading to ingestion, reduced nutrition, internal injuries, or even starvation. Animals can also become entangled, which impairs movement, feeding, and escape from predators.

These plastics also affect the ecosystem beyond direct harm. They can block sunlight to phytoplankton, disrupting photosynthesis and the base of the marine food web, and they can carry and release toxic chemicals that accumulate up the food chain. Cleanup is extremely challenging because the debris is dispersed over a vast area rather than forming a solid island, so the environment continues to be impacted over long periods.

This explains why the major concern is the persistent, non-biodegradable plastics that harm wildlife and disrupt ecological processes, rather than any notion that the patch cleans the ocean, creates coral reefs, or improves fish habitats.