One of their trick animations involves them turning into squid form.
This ink can inhibit the movement of Inklings that do not have a matching color.
When they fall in water, because they are already made of liquid, they will dissolve, leaving their clothes and weapon in the water.
Description: In squid form, an Inkling can swim and jump quickly through ink of the same color to swim up walls, through wire fences, and grates, into areas that are not typically reachable. Squids cannot travel past striped barriers, typically at the top of walls, to swim into inaccessible areas.