1. Introduction

2. Gaia-ESO survey: L1688
2.1. Target selection & observations
2.2. Data reduction and analysis

3. Membership selection

4. Analysis and results
4.1. Radial velocity distribution of L1688
4.2. Stellar dynamics of L1688
4.3. Stellar velocity gradient
4.4. Stellar, dense-cores, and diffuse-gas velocity dispersions

5. Summary