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  • A parasitic copepod that was associated with an ocean sunfish (Mola mola). Here, the copepod is backlit and focus-stacked in order to reveal the animal’s inner structure. The long appendage visible at the posterior of the copepod is one of two original appendages. The other appendage fell off during capture. Pictured here, the remaining appendage is split in two, such that the top and bottom halves are visible. The slits in these appendages carried juvenile copepods in various stages of development. This copepod is from the family Caligidae (possibly Caligus sp. or Lepeoptheirus sp.),
    copepod-parasite-mola-sunfish-south-...tif
  • This is a male hairy frogfish (Antennarius striatus) exhibiting the characteristic lump on his head and abdomen resulting from infection by the parasitic copepod Sarcotaces pacificus. A maggot-shaped female resides inside the lump, where she lays thousands of eggs. The eggs hatch within the lump and pass through five nauplius development stages before reaching their first copepodid stage, at which point the juvenile parasites are able to infect new hosts.
    antennarius-striatus-striated-frogfi...tif
  • The rostrum of a humpback whale (Megaptera novaeangliae) emerging from the water. This whale was part of a group of humpback whales engaged in cooperative bubble-net feeding. Viewing this image at 100%, you can see the tubercles (including single follicles of hair protruding from some of them), an injury to one of the tubercles, and a few whale lice (Cyamus boopis) at the tip of the lower jaw. Note also the barnacles under the jaw, which are humpback whale barnacles (Coronula diadema), that grow only on humpback whales. In addition, growing on the humpback whale barnacles are a type of gooseneck barnacle (Conchoderma auritum), that appear only on humpback whale barnacles.
    humpback-whale-rostrum-tubercles-par...tif
  • This is a male hairy frogfish (Antennarius striatus) exhibiting the characteristic lump resulting from infection by the parasitic copepod Sarcotaces pacificus. A maggot-shaped female resides inside the lump, where she lays thousands of eggs. The eggs hatch within the lump and pass through five nauplius development stages before reaching their first copepodid stage, at which point the juvenile parasites are able to infect new hosts.
    antennarius-striatus-striated-frogfi...tif
  • This is a parasite that was associated with a Mola mola ocean sunfish. It is a copepod of the family Caligidae (possibly Caligus sp. or Lepeoptheirus sp.), the carapace slightly over 1cm in length. The long appendage visible at the rear end is one of two original appendages. The other one fell off. The one that is visible is actually split into two. Each slit carried a developing juvenile copepod. There is one remaining one visible at the distal end.
    parasitic-copepod-associated-with-mo...tif
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Tony Wu Underwater Photography

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