Palaemon vulgaris
species of crustacean
Palaemon vulgaris, variously known as the common American prawn, common grass shrimp, marsh grass shrimp or marsh shrimp, is a common species of shrimp in the western Atlantic Ocean from Cape Cod Bay to the Gulf of Mexico. Adults grow to less than 5 cm (2.0 in) long, and are transparent except for some orange pigmentation on the eyestalks.
Hydrodynamics
Marsh grass shrimp have been investigated for their maneuverability and swimming. These shrimp swim metachronally, creating an appendage wave, starting with the pleopod closest to the tail, beating all of their appendages with a phase lag. They also modulate the profile area of their appendages to create net thrust.
Through Particle Image Velocimetry, two drag-reducing mechanisms have been identified in marsh shrimp swimming that enable them to reduce drag during the return stroke of their beat. The first of those mechanisms is asymmetric flexibility, with the appendages staying mostly rigid during the power stroke and being flexible during the return stroke, this results in a reduced wake. The second of those mechanisms is grouping of the appendages.
The public source identifies “Palaemon vulgaris” as species of crustacean. This brief keeps that definition visible, then builds a research path around Palaemon, vulgaris and species.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Mar 11, 2025. The linked authority identifier is Q3934145. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Palaemon vulgaris” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.