When an appellate court sends an appealed case back to the trial court for further action, the case is said to be remanded. This usually happens if the trial judge has made an error which requires a new trial or hearing.
Definition of nurse shark. : any of various usually bottom-dwelling sharks (family Ginglymostomatidae) with barbels near the nostrils; especially : a large yellowish to grayish brown shark (Ginglymostoma cirratum) of warm usually shallow coastal waters that is typically nonaggressive and rests often in groups on the sea floor during the day.
There are many species of sharks, over 400 in fact(and more are being found). Out of those 400+ most shark species are able to both buccal pump(pump water through their gills) and ram ventilate(swim to force water through their gills). There are some sharks that are only able to do one or the other though. Species that are primary low activity may not use ram ventilation much if at all, these species include the nurse shark and other similar sharks.