Credit for the photo: Huseyn Ek (Akuakare, Turkey)
Review: Abdel Rahman El Gamal (Founder of the website)
It is believed that the sonic echoes of the metal tanks may stress dolphins during their holding in open water. This is based on the ability of dolphins to emit variety of sounds and whistles for different purposes while listening for the return echoes. That is why minimizing echoes has been attempted whether through lining the walls of the pools with sound-absorbing materials or incorporating sound traps.
The inserted photo shows a cage that is designed for the temporary holding of dolphins in open waters which is thought to avoid the risk and/or stress which could occur to dolphins when held in metal pools.
Note: This post addresses a specific technical point with no contradiction so ever with the strong calls of the Animal rights groups against confinement animals including dolphins no matter how good the confinements are.
