Souvenir Sheet 1 contain four stamps.
1. Eurypharynx pelecanoides (NT?10): This mesopelagic and bathyalpelagic fish lives at depths of 500-3,000 meters. Despite its huge mouth, the fish mostly preys on small crustaceans due to its tiny teeth and stomach that can’t be over-stretched.
2. Argyropelecus aculeatus (NT?12): Commonly known as the Atlantic silver hatchetfish, it lives at depths of 200-1,000 meters. Its flat silver body resembles a mirror, reflecting the colors of its surroundings to camouflage itself. The light organs along its belly also help it conceal itself by producing light that hides its own shadow.
3. Bufoceratias shaoi (NT?10): This species lives at depths of 500-1,200 meters. Its body is globular in shape but slightly flatter on the sides. The tip of its first dorsal fin has evolved to become a light organ called the illicium or esca, which contains many symbiotic bioluminescent bacteria. The esca can emit light to lure curious prey—hence its Chinese nickname: “lantern fish.”
4. Regalecus glesne (NT?12): This mesopelagic fish is found at depths ranging from the surface to 1,000 meters. There have been occasional sightings of it in waters off the coast ofTaiwan. The world’s longest bony fish, it can grow up to 11 meters. It is nicknamed the “earthquake fish” in Taiwan because it is often spotted by fishermen after earthquakes.
Souvenir Sheet 2 contain one stamp.
Histioteuthis celetaria pacifica (NT?25): This species lives at depths of 300-500 meters. Densely covered with light organs, its body can emit just the right amount of light to camouflage itself. One of its eyes has evolved to be larger than the other so as to help it search for prey.