Edward O. Wilson, The Future of Life
(New York: Vintage Books, 2003), p. 16:
Swarming around the loriciferans and cycliophorans, and deep into the soil of shallow marine waters, are other Alice-in-Wonderland creatures, the meiofauna, most of them barely visible to the naked eye. The strange creatures include gastrotrichs, gnathostomulids, kinorhynchs, tardigrades, chaetognaths, placozoans, and orthonectids, along with nematodes and worm-shaped ciliate protozoans. They can be found in buckets of sand drawn from the intertidal surf and offshore shallow water around the world. So, for those seeking a new form of recreation, plan a day at the nearest beach. Take an umbrella, bucket, trowel, microscope, and illustrated textbook on invertebrate zoology.
Hat tip: my daughter.