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  • California Sea Cucumber (Parastichopus californicus) standing upright in spawning position. Prince William Sound, Alaska, USA
    20220627-500_0443.jpg
  • Critically endangered Nassau grouper (Epinephelus striatus) gather during the winter full moons to spawn. Image made in The Bahamas.
    2016_12_13LongIslandBH397.jpg
  • Critically endangered Nassau grouper (Epinephelus striatus) gather during the winter full moons to spawn. Image made in The Bahamas.
    2016_12_13LongIslandBH401.jpg
  • Elkhorn corals (Acropora palmata) at night silhouetted by a scientists light during the annual coral spawn. Image made off Abaco, Bahamas.
    20180801-500_8531.jpg
  • Two Nassau grouper rest during the daylight hours off Long Island, Bahamas. At sunset the grouper will spawn. The fish in the foreground shows the normal barred pattern while the fish in the background shows a color phase known as white-belly. During spawning the grouper will often change color and pattern. Scientists are still studying what the color changes mean.
    Spawning Colors
  • A fisherman's cage is pulled up by researchers. It is illegal to fish for Nassau grouper (Epinephelus striatus) December - February in the Bahamas when this image was taken. Lack of enforcement is a common issue in Bahamian fisheries. The scientists tagged and released the fish. It is part of an ongoing study to learn about the amazing phenomenon known as the grouper spawning aggregation. During the winter full moons the normally solitary grouper gather en masse to spawn at certain locations throughout the Caribbean and are especially vulnerable to over-fishing. Learning about these aggregations is of major importance to protect and manage the economically and culturally important fishery for these critically endangered fish.
    2016_12_13LongIslandBH590.jpg
  • A fisherman's cage is pulled up by researchers. It is illegal to fish for Nassau grouper December - February in the Bahamas when this image was taken. Lack of enforcement is a common theme in Bahamian fisheries management. The scientists tagged and released the fish. It is part of an ongoing study to learn about the amazing phenomenon known as the grouper spawning aggregation. During the winter full moons the normally solitary grouper gather en masse to spawn at certain locations throughout the Caribbean and are especially vulnerable to over-fishing. Learning about these aggregations is of major importance to protect and manage the economically and culturally important fishery for these endangered fish.
    2016_12_13LongIslandBH590.jpg
  • Nassau grouper (Epinephelus striatus) showing the change in color pattern during spawning. During the winter full moons the normally solitary grouper gather en masse to spawn at certain locations throughout the Caribbean. Critically Endangered Species. Bahamas
    2016_12_13LongIslandBH058.jpg
  • A dead male pink salmon (Oncorhynchus gorbuscha) with maple leaf after spawning in a river on Vancouver Island, Canada.
    20201005-500_4537.jpg
  • Elkhorn corals (Acropora palmata) at night silhouetted by a scientists light during the annual coral spawn. Image made off Abaco, Bahamas.
    20180801-500_8492.jpg
  • A blood star (Henricia leviuscula) and giant california sea cucumber (Apostichopus californicus) feed on the eggs of spawning leafy hournmouth snails (Chicoreus palmarosae) off Vancouver Island, Canada.
    20201017-500_6428.jpg
  • Aerial view of Harbor seals (Phoca vitulina) feeding on the annual Pacific herring (Clupea pallasii)) spawn off Vancouver Island, BC, Canada.
    20210315-DJI_0054.jpg
  • Aerial view of Harbor seals (Phoca vitulina) feeding on the annual Pacific herring (Clupea pallasii) spawn off Vancouver Island, BC, Canada.
    20210315-DJI_0067.jpg
  • Aerial view of Harbor seals (Phoca vitulina) feeding on the annual Pacific herring (Clupea pallasii)) spawn off Vancouver Island, BC, Canada.
    20210315-DJI_0065.jpg
  • Aerial view of Harbor seals (Phoca vitulina) feeding on the annual Pacific herring (Clupea pallasii)) spawn off Vancouver Island, BC, Canada.
    20210315-DJI_0058.jpg
  • A rocky beach on Vancouver Island that is ideal habitat for spawning plainfin midshipman fish (Porichthys notatus).
    20210628-DSC_7353.jpg
  • Aerial view of Harbor seals (Phoca vitulina) feeding on the annual Pacific herring (Clupea pallasii)) spawn off Vancouver Island, BC, Canada.
    20210315-DJI_0016.jpg
  • Aerial view of Harbor seals (Phoca vitulina) feeding on the annual Pacific herring (Clupea pallasii)) spawn off Vancouver Island, BC, Canada.
    20210315-DJI_0034.jpg
  • During the winter full moons the normally solitary Nassau grouper gather en masse to spawn at certain locations throughout the Caribbean. Learning about these aggregations is of major importance to protect and manage the economically and culturally important fishery for these critically endangered fish.
    Spawning Aggregation
  • Pink salmon (Oncorhynchus gorbuscha) female (at front) and male spawn on a redd in a river on Vancouver Island, Canada.
    20201006-500_5050.jpg
  • Scientists and volunteers pull in a trap with Nassau Grouper off Long Island, Bahamas.
    2016_12_13LongIslandBH250.jpg
  • A green light attracts plankton to a net at night off Long Island, Bahamas looking for larval Nassau Grouper.
    2016_12_13LongIslandBH156.jpg
  • Dr. Krista Sherman brings a Nassau grouper to the depth the fish was originally caught at. The fish was implanted with a permanent tag that will transmit the fish's location for the rest of his or her life. Blood and a fin clip were also taken for genetic analysis.
    Release
  • Dr. Krista Sherman collects a Nassau Grouper from an onboard livewell in The Bahamas to be tagged, measured and examined.
    Tracking Grouper
  • A fisherman's cage is pulled up by researchers. It is illegal to fish for Nassau grouper December - February in the Bahamas when this image was taken. Lack of enforcement is a common issue in Bahamian fisheries issues. The scientists tagged and released the fish.
    Illegal Fishing
  • A veterenarian implants a transmitter tag into an adult Nassau grouper in The Bahamas to learn about their movements.
    2016_12_13LongIslandBH1289.jpg
  • Pink salmon (Oncorhynchus gorbuscha) migrate up river on Vancouver Island, Canada.
    20201006-500_5974.jpg
  • Pink salmon (Oncorhynchus gorbuscha), male, in a severely degraded state, migrating up river on Vancouver Island, Canada.
    20201005-500_4068.jpg
  • Pink salmon (Oncorhynchus gorbuscha) migrate up river on Vancouver Island, Canada.
    20201006-500_5593.jpg
  • Pink salmon (Oncorhynchus gorbuscha) migrate up river on Vancouver Island, Canada.
    20201006-500_5570.jpg
  • Pink salmon (Oncorhynchus gorbuscha) migrate up river on Vancouver Island, Canada.
    20201005-500_4190.jpg
  • Pink salmon (Oncorhynchus gorbuscha) (female at center) migrate up river on Vancouver Island, Canada.
    20201005-500_4104.jpg
  • Close-up view of the teeth and jaw of a male pink salmon (Oncorhynchus gorbuscha) while he migrates up river on Vancouver Island, Canada.
    20201006-500_6131.jpg
  • Pink salmon (Oncorhynchus gorbuscha) migrate up river on Vancouver Island, Canada.
    20201005-500_4281.jpg
  • Pink (Oncorhynchus gorbuscha) and Coho (Oncorhynchus kisutch) salmon migrate up river on Vancouver Island, Canada.
    20201005-500_3538.jpg
  • Pink salmon (Oncorhynchus gorbuscha) migrate up river on Vancouver Island, Canada.
    20201006-500_5613.jpg
  • Pink salmon (Oncorhynchus gorbuscha) migrate up river on Vancouver Island, Canada.
    20201006-500_5264.jpg
  • Pink salmon (Oncorhynchus gorbuscha) migrate up river on Vancouver Island, Canada.
    20201006-500_5741.jpg
  • Pink salmon (Oncorhynchus gorbuscha) migrate up river on Vancouver Island, Canada.
    20201005-500_4221.jpg
  • A great blue heron (Ardea herodias) eating a plainfin midshipman (Porichthys notatus) fish as they come into the intertidal zone to spawn and protect their eggs. Vancouver Island, British Columbia, Canada.
    20210628-501_0887.jpg
  • Pink Salmon (Oncorhynchus gorbuscha) rush up river to spawn before they die. Image made on Vancouver Island, BC, Canada.
    20201006-500_5974.jpg
  • After spawning, pink salmon die, and feed the forest.
    20201005-500_4537.jpg
  • A plainfin midshipman fish (Porichthys notatus) boiled to death on the shores of Vancouver Island. The victim of a heat wave (a recent study concluded it would have been almost impossible without human-made climate change) that coincided with extremely low tides in the middle of the day. The fish come into the intertidal zone to mate, spawn and protect their eggs.
    20210628-DSC_7337.jpg
  • Whale shark (Rhincodon typus) feeding on fish spawn, Isla Mujeres, Mexico.
    2010-08-19 Cancun Whale Sharks3302.jpg
  • A plainfin midshipman fish (Porichthys notatus) boiled to death on the shores of Vancouver Island. The victim of a heat wave (a recent study concluded it would have been almost impossible without human-made climate change) that coincided with extremely low tides in the middle of the day. The fish come into the intertidal zone to mate, spawn and protect their eggs.
    20210628-DSC_7349.jpg
  • A great blue heron (Ardea herodias) hunting for plainfin midshipman (Porichthys notatus) fish as they come into the intertidal zone to spawn and protect their eggs. Vancouver Island, British Columbia, Canada.
    20210628-501_0940.jpg
  • A great blue heron (Ardea herodias) hunting for plainfin midshipman (Porichthys notatus) fish as they come into the intertidal zone to spawn and protect their eggs. Vancouver Island, British Columbia, Canada.
    20210628-501_0939.jpg
  • Elkhorn corals (Acropora palmata) at night silhouetted by a scientists light during the annual coral spawn. Image made off Abaco, Bahamas.
    20180801-500_8531.jpg
  • Sockeye salmon (Oncorhynchus nerka) swimming up river to spawn on Vancouver Island, BC, Canada.
    20201022-500_7245.jpg
  • A great blue heron (Ardea herodias) hunting for plainfin midshipman (Porichthys notatus) fish as they come into the intertidal zone to spawn and protect their eggs. Vancouver Island, British Columbia, Canada.
    20210628-501_0937.jpg
  • Whale shark (Rhincodon typus) silhouette while feeding on fish spawn, Isla Mujeres, Mexico.
    2010-08-19 Cancun Whale Sharks524.jpg
  • Whale sharks (Rhincodon typus), two, feeding on fish spawn, Isla Mujeres, Mexico.
    2010-08-19 Cancun Whale Sharks583.jpg
  • A plainfin midshipman fish (Porichthys notatus) boiled to death on the shores of Vancouver Island. The victim of a heat wave (a recent study concluded it would have been almost impossible without human-made climate change) that coincided with extremely low tides in the middle of the day. The fish come into the intertidal zone to mate, spawn and protect their eggs.
    20210628-DSC_7336.jpg
  • A nassau grouper (Epinephelus striatus) illegally trapped in a fish pot or fish trap. Each year the Bahamas closes the nassau grouper fishery to allow the fish time and space to spawn. Lack of enforcement means fisherman can easily break the law and catch the fish. Nassau grouper are now considered critically endangered species yet are still widely available on restaurant menus.
    2015_12_15HI018.jpg
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