The turtle tentatively peeked out and blinked. To the untrained eye, she might’ve looked healthy, but her shell was dull instead of glossy — a sign that she was infected with the fungus.

2 A tortoise by any other name A turtle refers to any reptile with a shell, so all tortoises are technically turtles, too. The main difference is that tortoises live only on land, while turtles ...