Because the churchgoing population is now much smaller in the West and because the civic registry office wedding can have an impersonal nature, couples are choosing to use marriage celebrants to conduct their wedding ceremony. They do this instead of being married in church or in the official registry office. The more relaxed nature of the ceremony in front of a civil marriage celebrant means that the wedding vows can be exchanged in any number of venues--in the home on the bride, the groom or their parents, in a park, by the seashore, in a reception centre or restaurant. Some adventurous couples have exchanged their vows on boats, in a helicopter, or on the top of a mountain. As long as the marriage celebrant is there to ensure the correct ritual is followed, and the proper legal witnesses testify to the fact that the vows are exchanged properly, there is no limit to where the wedding ceremony can take place. Some have even taken place under water, with bride and groom, both experienced underwater divers, exchanging vows by writing on waterproof paper with waterproof pens.