Norbert Wu / Cottonmouth Jack (Uraspis secunda) school swimming near seamount, Revillagigedos Islands, Mexico

Norbert Wu / Flagtail (Kuhlia taeniura) school among huge waves, Revillagigedos Islands, Mexico

Norbert Wu / Streamer Hogfish (Bodianus diplotaenia) male, Revillagigedos Islands, Mexico

Norbert Wu / Black-nosed Butterflyfish (Johnrandallia nigrirostris) school, Revillagigedos Islands, Mexico

Norbert Wu / Giant Electric Ray (Narcine entemedor) hiding in sand, Revillagigedos Islands, Mexico

Norbert Wu / Whitecheek Surgeonfish (Acanthurus nigricans) in school of Clarion Angelfish (Holacanthus clarionensis), Revillagigedos Islands, Mexico

Norbert Wu / Clarion Angelfish (Holacanthus clarionensis) school, Revillagigedos Islands, Mexico

Norbert Wu / Clarion Angelfish (Holacanthus clarionensis) group following Manta Ray (Manta birostris) to pick up food bits, Revillagigedos Islands, Mexico

Norbert Wu / Remora (Remora remora) on Manta Ray (Manta birostris), Revillagigedos Islands, Mexico

Norbert Wu / Lava and mud flow frozen on barren volcanic crater, Socorro Island, Revillagigedos Islands, Mexico

Gerry Ellis / Old growth Muskeg temperate rainforest surrounding peat bog on Revillagigedo Island, Tongass National Forest, Alaska

Gerry Ellis / Old growth Muskeg temperate rainforest surrounding peat bog on Revillagigedo Island, Tongass National Forest, Alaska