It seems like an ocean desert except there are rafts of Sargassum, which is not a plant but an algae. It grows stipes and blades and has gas-filled globes which keep the weed on the ocean surface.
The Sargassum grows from a small branch that has broken away and as it does so, tiny creatures come to live on it: "...bryozoans, feathery hydroids and spiraled tube worms" that feed on the microscopic life. There are "rubbery snails, waving anemones and spongy nudibranchs" that stalk and eat.
The floating Sargassum offers " a place for wandering creatures to explore: pinching crabs, skittering shrimp, buggy amphipods." They scavenge, eating dead and living plants and animals, cleaning up the weeds." This allows young creatures like "pointy swordfish, stocky jacks, and blunt-nosed mahi mahi to grow as they eat tiny bits of food that falls off the weed."
The Sargassum also contains strange creatures like "...toothless pipefish, riffling flatworm, and crawling frogfish." The pipefish sucks up amphipods, while the frogfish lure's it's prey, which it swallows whole.
There is life both above and below but the Sargassum is a home to a diverse community.
Discussion
Sea Without A Shore tells the story of how a new Sargassum seaweed fragment develops a growing community. Author Barbara Rosenstock was motivated to research the Sargasso Sea after encountering tangled seaweed on a beach in the Dominican Republic.
The Sargasso Sea encompasses an area that is two thousand miles long and seven hundred miles wide. It takes it's name from the Sargassum seaweed that is free floating and that reproduces "vegetatively" - that is without seeds or spores. The Sargasso Sea has no land borders. Instead its borders are four ocean currents: to the west the Gulf Stream, to the north the North Atlantic current, to the east the Canary Current, and to the south the North Atlantic Equatorial current.
In her Research Note, Rosenstock writes that she and illustrator, Katherine Roy met with oceanographers, Dr. Kerry Whittaker assistant professor at Corning School of Oceanography, Maine Marine Academy and Dr. Robbie Smith, curator, Bermuda Natural History Museum, in Bermuda to research the Sargassum. Bermuda is the only landmass within the Sargasso Sea. The oceanographers took them to the Bermuda Aquarium, Museum and Zoo to view the ocean life exhibits. They also examined fresh Sargassum to see the various sea creatures that live in the weed.
Based on her research, Rosenstock realized that she could not feature all the life in the Sargasso Sea into one picture book. Instead, she presents a simplified story of this open ocean ecosystem, highlighting both its diversity and how life within the Sargassum is interconnected. Rosenstock employs short descriptive phrases to describe the various sea creatures and these descriptions are accompanied by the beautiful illustrations by Katherine Roy.
Rosenstock has included an map of the Sargasso Sea framed by the sea life mentioned in the book. Readers can return to the illustrations to locate these creatures as they are mentioned in the picture book. There is also a short Afterword by Dr. Sylvia Earle, a former chief scientist of NOAA, and currently president and chairman of Mission Blue, an Explorer-in-Residence at the National Geographic Society. There are full colour photographs of a cluster of Sargassum and of the Sargassum frogfish, a Research Note by the author, a note on Too Much Sargassum?, and a list of Sources.
The Sargasso Sea is believed to have existed for at least ten thousand years and its continued may depend on future generations knowing and understanding this unique ocean ecosystem.
Book Details:
Sea Without A Shore, Life in the Sargasso by Barbara Rosenstock
Sea Without A Shore, Life in the Sargasso by Barbara Rosenstock
New York: Norton Young Readers 2024
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