Help segmenting

I have this CT scan of a stack of mussles. I would like to separate these mussles to individual slides so mussle 1 on one slide, mussle 2 one one slide etc. without loosing any data since I want to analyse the mussle for shell thickness and porosity etc. The mussles are fairly close together but never touch but due to their curvation you can’t just split them , they will overlapp. Could anyone guide me in the right direction in dragonfly ( I have dragonfly 3d 2025) on the steps to do this?

Much appreciated

Jessica