Fig.1. Squalus cinereus: basking Shark Fig. 2. Sternoptyx diaphana: transparent sternoplya. Fig.3.Sygnathus foliatus: foliated pipe fish Fig.4.Tetrodon testudineus: tortoise shell tetrodon. Fig.5.Xiphias gladius: common sword fish Fig.6. Zeus faber: common dory.