Some sea slugs sever their own heads, grow whole new bodies

Washington DC (UPI) Mar 8, 2021

For at least two species of sea slug, decapitation is no big deal. After purposefully severing its head, a sacoglossan sea slug can regrow its entire body, heart and all. Scientists observed the phenomenon - detailed Monday in the journal Current Biology - while studying the development of the marine invertebrates, from eggs to adult sea slugs. In the lab, researchers noticed t