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  • Palau's reefs have been attacked in the past by massive crown of thorns starfish (Acanthaster planci) infestations. Ron Leidich recalled that he removed about 6500 of these starfish from this one particular reef after the el Nino event in 1998. The reefs have recovered, but there are still occasional outbreaks of these coral-consuming invertebrates.
    crown-of-thorns-starfish-acanthaster...tif
  • Ron Leidich removing crown of thorns starfish (Acanthaster planci) from coral reef in shallow water in Palau
    ron-leidich-removing-crown-of-thorns...tif
  • Harlequin shrimp (Hymenocera elegans) standing guard over its captive starfish. Ambon, Indonesia
    Hymenocera-elegans-harlequin-shrimp-...tif
  • Harlequin shrimp (Hymenocera elegans) eating a red starfish in Ambon, Indonesia
    harlequin-shrimp-Hymenocera-elegans-...tif
  • This is a large male Leiaster leachi starfish engaged in spawning, releasing streams of sperm into the water. Spawning is tandem with other nearby individuals, synchronized by tide time and flow. This starfish was between 40cm and 45cm in size.
    leiaster-leachi-sea-star-spawning-ja...tif
  • This is a large male Leiaster leachi starfish engaged in spawning, releasing streams of sperm into the water. Spawning is tandem with other nearby individuals, synchronized by tide time and flow. This starfish was between 40cm and 45cm in size.
    leiaster-leachi-sea-star-spawning-ja...tif
  • This is a male Leiaster leachi starfish engaged in spawning, releasing streams of sperm into the water. Spawning is tandem with other nearby individuals, synchronized by tide time and flow. This starfish was between 40cm and 45cm in size.
    leiaster-leachi-sea-star-spawning-ja...tif
  • This is a large male Leiaster leachi starfish engaged in spawning, releasing streams of sperm into the water. Spawning is tandem with other nearby individuals, synchronized by tide time and flow. This starfish was between 40cm and 45cm in size.
    leiaster-leachi-sea-star-spawning-ja...tif
  • This is a large male Leiaster leachi starfish engaged in spawning, releasing streams of sperm into the water. Spawning is tandem with other nearby individuals, synchronized by tide time and flow. This starfish was between 40cm and 45cm in size.
    leiaster-leachi-sea-star-spawning-ja...tif
  • This is a male Leiaster leachi starfish engaged in spawning, releasing streams of sperm into the water. Spawning is tandem with other nearby individuals, synchronized by tide time and flow. This starfish was between 40cm and 45cm in size.
    leiaster-leachi-sea-star-spawning-ja...tif
  • Close-up view of a male Leiaster leachi starfish extruding sperm from one of its arms whille engaged in spawning.
    leiaster-leachi-sea-star-spawning-ja...tif
  • This is a male Leiaster leachi sea star broadcasting sperm into the water during spawning time. Other nearby sea stars were broadcasting sperm and eggs into the water in synchrony. This individual was between 40cm and 45cm in diameter. Winner of Underwater category of the 2022 Wildlife Photographer of the Year contest #WPY58.
    leiaster-leachi-sea-star-spawning-ja...tif
  • This is a pile of northern Pacific seastars (Asterias amurensis) and blue bat seastars (Patiria pectinifera) that are scavenging a dead giant pacific octopus (Enteroctopus dofleini). It took several days for the entire octopus to be consumed.
    enteroctopus-dofleini-giant-pacific-...tif
  • This is a giant pacific octopus (Enteroctopus dofleini) investigating a pile of northern Pacific seastars (Asterias amurensis) and blue bat seastars (Patiria pectinifera) that are scavenging a dead giant pacific octopus. One arm of the dead octopus is visible. Most of the dead cephalopod had already been consumed. This octopus touched and caressed the remains of the dead octopus for a few minutes, then departed.
    enteroctopus-dofleini-giant-pacific-...tif
  • The Patch Reefs in Palau are a series of small shallow-water reefs south of Long Lake. These reefs suffered a severe crown of thorns starfish infestation after the 1998 el Nino. Ron Leidich and friends removed thousands of crown of thorns, and the reefs have recovered quickly. The Patch Reefs are a transition zone from the inner lakes and mangroves of the Rock Islands to open ocean. Here, there are lots of branching corals and also schools of fast-swimming fish like this Dascyllus reticulatus darting in and out of coral to gather food in the current.
    Reticulated-damselfish-Dascyllus-ret...tif
  • This is a female pin cushion star (Culcita novaeguineae) engaged in spawning. The starfish has climbed to the top of the reef to release eggs, visible as a cloud of tiny white dots surrounding the animal.
    culcita-novaeguineae-cushion-star-sp...tif
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