Sandy beaches are best sampled with large bag seines pulled by hand. The best time to sample beaches is at night when many fishes move into the shallows to feed in the cover of darkness. Examples are freshwater stingrays and drum. Others, like the knifefish, rise up from their daytime retreats in the sand.


  • Title: Stingray, Potamotrygon motoro
  • Creator: Mark Sabaj Perez/ANS

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