Tayammum in the Presence of Water Due to Fear of Exposing the Awrah

Question:
Honorable Shaykh, this questioner says: If we are on the seashore, is it permissible to perform tayammum (dry ablution with clean earth) while water is available, out of fear of exposing the 'awrah (the part of the body that must be covered)? Yes. He says, may Allah keep you safe: If we are on the seashore, is it permissible to perform tayammum while water is available, out of fear of exposing the 'awrah?

Answer:
Regarding the 'awrah and wudu' (the ablution for prayer), there is no issue with the 'awrah in wudu'; they perform wudu and pray. Istinja' (cleaning oneself after relieving oneself) is replaced by istijmar (cleaning with a stone or dry material); they perform istijmar to cover themselves from istinja' by Allah. If this is a case of forgetfulness, and there is no issue with the 'awrah in wudu, but if he is in a state of janabah (major ritual impurity), he is in a state of janabah and needs to perform ghusl (the full ritual bath), then this is open; it becomes like a tree’s planting, or otherwise he uses a garment. He performs ghusl behind it, finds an open place, and takes water with him. He performs ghusl in the sea, takes water with him, and closes off the open place, or moves away from people and performs ghusl. As for tayammum while water is available, it is not permissible, and he does not hide with it. He goes and moves away from it, or covers himself with a tree, a garment, or a camel.