Dire forecast for seascapes

The sun setting over the marsh on Johns Island, South Carolina, and (below) a container of cannonball jellyfish from the ACE Basin. Soon, many of Earth’s marine ecosystems could be fundamentally altered if climate change, overfishing, ocean acidification and coastal development continue unabated, according to new research. — Madeline Gray/The New York Times

WORKING from a dock on St Helena Island, South Carolina, on a sweltering summer day, Ed Atkins pulled in a 1.5m cast net from the water and tipped out a few glossy white shrimp from the salt marsh.

Atkins, a Gullah Geechee fisherman, sells live bait in a shop his parents opened in 1957.