The Philippine Coral Reef Tank focuses on the most diverse and fragile of marine ecosystems. From the main exhibit floor, visitors look down on a shallow, sandy lagoon -a calm, protected area inhabited by sharks, rays, and colorful fishes. Where the lagoon drops off to the deep reef, hundreds ...more ↓
The chambered nautilus, Nautilus pompilius, is the best-known species of nautilus. The shell, when cut away, reveals a lining of lustrous nacre and displays a nearly perfect equiangular spiral, although it is not a golden spiral. The shell exhibits countershading, being light on the bottom and dark on top. This is to help avoid predators, because when seen from above, it ...more ↓