👉 Synaptiphilids are a group of marine invertebrates, including some that have synaptophores (synaptic organs). These invertebrates primarily live in shallow water and are known for their specialized anatomy, which allows them to perform complex sensory and motor functions. They are also known for their unique adaptations, such as the presence of multiple synaptophores on the same organ or the development of a "spine" within the head that allows for rapid movement in response to stimuli