Sea custodians are creatures wondering around at the shores in the cave of Seights. The appearance of a Sea custodian is similar to the Cavefish. Level 18 Sea custodians have a slightly low chance of damaging the players. You can gain 2 magic experience every 10 life points deflected to a level 18 Sea custodian and 3 magic experience every 10 life points deflected to a level 22 Sea custodian using Deflect magic. There are few other monsters with similar features, but in high speed; at Geomtree's Sun Tower.