Ecology. Freshwater eels are slip-sliding away.
Stone
Richard
R
D000818:Animals; D017753:Ecosystem; D004524:Eels / Q000254:growth & development / Q000502:physiology; D005398:Fisheries; D005618:Fresh Water; D009792:Oceans and Seas; D011156:Population Density; D012098:Reproduction; D012623:Seawater