The half-naked hatchetfish,shown here munching on a shrimp, is just one of many billions of mesopelagic ocean fish that migrate up and down the water column each day to hunt food and avoid predators.
The New Jersey Department of Environmental Protection and Department of Health advise against eating any fish from the Lower Passaic because it may be contaminated with toxic chemicals. But Owaldo Avad says he's been catching and consuming fish like these from the river for eight years.
Kumu (sp. Parupeneus porphyreus). The Whitesaddle Goatfish has a special place in Hawaiian culture. In ancient Hawaii, the fish were used in offerings to the gods.
Courtesy of Derek Yoshinori Wada
Chris Tremblay, a member of the Passive Acoustics group at NOAA's Northeast Fisheries Science Center, deploys an underwater recording device along the Eastern Seaboard to listen for the mating sounds of Atlantic cod.
Courtesy of Chris Tremblay
Parisi Tsakirios, 29, mends a net as he prepares for another fishing trip. "I can't imagine doing any other job, because I love the sea," he says. "But there are hardly any fish. I barely break even. I can't support my family."
NOAA Fisheries biologist Nick Wegner holds an opah caught during a research survey off the California coast. Researchers say the opah is the first fish known to be fully warmblooded, circulating heated blood throughout its body.