Discovery and Science Channels How Its Made Siren Systems episode. All copyrights go to their respective owners.br How Its Made Season 18 episode 7 Siren Systems.br How Its Made S18E07 [HD] Fish Replicas - Siren Systems - Pre-packaged Sandwiches - Candlesticks The show is presented on the Science Channel in the US, .br br How Its Made S18E07 - Fish Replicas - Siren Systems - Pre-packaged Sandwiches - Candlesticks. PLEASE SUBSCRIBE--- How Its Made is a documentary .