Very similar, in location, function, and nature, to Muladhara, the second cakra, Svadhisthana, is the seat or basis of the individual. It is very closely associated with the unconscious, the storehouse of all past experiences and, importantly, the unique, individual reaction to them (thus, acting as the source, or controller, of the individual self or ego).
The true nature of Svadhisthana remains latent, hidden, unknown. It is here where the karmic seeds of past actions lay, exacting influence on the conscious self. To the seeker of true peace and liberation, this cakra may be seen as nothing but an obstacle. However, if one possesses sincerity, authentic desire to transcend suffocation of the mundane, they will find the willpower to persevere through the 'test'.
Indeed, the element associated with Svadhisthana is Water and it is linked to all fluids within the body. It is the very nature of water to flow. Upon meeting an obstacle, water does not stop, but ceaselessly perseveres, eventually overcoming all in its path.
Physically, Svadhisthana is associated with the reproductive organs, womb, and genitals. Desire and sexuality are seated in this cakra, and, often, our greatest tests lay in controlling our more basic, animal instincts to simply, blindly, indiscriminately satisfy emotional and sexual desires. Healthy action, here, allows us to flow with and enjoy all that life has to offer, without being caught up - lost - in a flood of stimulation.