Yes because they have what is called a invesible foot. That keeps them moving
Gammarus bousfieldi was created in 1961.
Gammarus roeseli was created in 1835.
Gammarus hyalelloides was created in 1976.
Gammarus pulex was created in 1758.
Homarus gammarus was created in 1758.
Gammarus desperatus was created in 1981.
Gammarus acherondytes was created in 1940.
Gammarus lacustris was created in 1863.
Gammarus chevreuxi was created in 1913.
Gammarus pecos was created in 1970.
Gammarus setosus was created in 1931.
no