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  • This is a polychaete worm in the Syllidae family, perhaps a Epigamia magna. Normally benthic residents, these segmented worms transition to sexually mature pelagic epitokes for the purpose of reproduction (as pictured here, carrying thousands of eggs). This individual was part of a swarm comprising many thousands of worms split up across multiple groups swimming in shallow water (surface to around 7m depth). I came across this aggregation in the 10 days leading up to full moon. Though I was unable to witness spawning, it seems that spawning took place after dark. Spawning did not appear to be synchronized. The swarm began to decrease in numbers after the full moon, suggesting the possibility of sequential spawning over a period of days.
    syllidae-polychaete-worm-with-eggs-j...tif
  • This is a head-on view of a polychaete worm in the Syllidae family, perhaps a Epigamia magna. Normally benthic residents, these segmented worms transition to sexually mature pelagic epitokes for the purpose of reproduction (as pictured here, carrying thousands of eggs). This individual was part of a swarm comprising many thousands of worms split up across multiple groups swimming in shallow water (surface to around 7m depth). I came across this aggregation in the 10 days leading up to full moon. Though I was unable to witness spawning, it seems that spawning took place after dark. Spawning did not appear to be synchronized. The swarm began to decrease in numbers after the full moon, suggesting the possibility of sequential spawning over a period of days.
    syllidae-polychaete-worm-with-eggs-j...tif
  • This is a side view of a polychaete worm in the Syllidae family, perhaps a Epigamia magna. Normally benthic residents, these segmented worms transition to sexually mature pelagic epitokes for the purpose of reproduction (as pictured here, carrying thousands of eggs). This individual was part of a swarm comprising many thousands of worms split up across multiple groups swimming in shallow water (surface to around 7m depth). I came across this aggregation in the 10 days leading up to full moon. Though I was unable to witness spawning, it seems that spawning took place after dark. Spawning did not appear to be synchronized. The swarm began to decrease in numbers after the full moon, suggesting the possibility of sequential spawning over a period of days.
    syllidae-polychaete-worm-with-eggs-j...tif
  • This is a female whitespotted pygmy filefish (Rudarius ercodes) tending to eggs affixed to a blade of Zostera marina seagrass. This photograph is from the Hakodate area of Hokkaido. This is further north than this species is generally found. Photographed in Hokkaido, Japan.
    rudarius-ercodes-whitespotted-pygmy-...tif
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Tony Wu Underwater Photography

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