Sock nets consists of a sleeve that can be partly or completely watertight. The front end has a handle that keeps it open for the fish to be scooped. The rear end is held closed until released appropriately for the fish to exit..  

Sock nets are absolutely vital for the damage-free handling of large fish.

Note: Net material gets damaged by overexposure to chlorine. In the case of a sock net it can lead to a costly spill if the material becomes weakened and tears