Posted 19 July 2018 - 10:10 AM
Hard to tell from your vid. See this:https://www.youtube....h?v=hXfoFx-MY6s
If they are large they are more likely to be one of these. As suggested by this vid there is a lot of range in size. Many of the adults are quite large.
This might be useful:
This last one has nice pix and a key but is US-centric.
Maybe finding something in German, French or Italian might get you closer
Edited by Tom_Kline, 19 July 2018 - 10:18 AM.
Thomas C. Kline, Jr., Ph. D.
Oceanography & Limnology
Currently used housed digital cameras: Canon EOS-1Ds MkIII, EOS-1D MkIV, and EOS-1DX; and Nikon D3X. More or less retired: Canon EOS-1Ds MkII; and Nikon D1X, D2X, and D2H.
Lens focal lengths ranging from 8 to 200mm for UW use. Seacam housings and remote control gear. Seacam 60D, 150D, and 250D, Sea&Sea YS250, and Inon Z220 strobes.