Non-moving joints are found in humans

The answer is:  skull

Non-mobile joints are found in humans, especially in the skull. These joints, known as articular structures, are composed of tough, fibrous tissue that connects the ends of bones. Examples of immovable joints include the sutures between the bones of the skull, the joints between the teeth and lower jaw, and the joint between the clavicle and sternum. These fixed joints provide stability to the body while allowing minimal movement. Immovable joints also help protect other organs, such as the brain and heart, as they are located in areas where any sudden movement can cause serious damage. Stable joints also play a key role in helping to support and distribute body weight.

Immobile joints are immovable joints that connect the ends of bones with tough, fibrous tissue. These immovable joints are found mostly in the skull, such as the sutures between the bones of the skull and the syndesmosis between the long bones of the body. Fixed joints also include the interdental and mandibular joints and the interdental joint. Immovable joints consist of dense, irregular connective tissue that surrounds the joint surfaces of bones. Although there are several types of joints that move freely in the body, fixed joints remain fixed and provide stability to the body's structure.