Elysia grandifolia
... that naturalist Edward Frederick Kelaart observed the heart of Elysia grandifolia beating in its back?
... that naturalist <a href="./Edward_Frederick_Kelaart" id="mwCEI" rel="mw:WikiLink" title="Edward Frederick Kelaart">Edward Frederick Kelaart</a> observed the heart of <i id="mwCEM"><b id="mwCEQ"><a href="./Elysia_grandifolia" id="mwCEU" rel="mw:WikiLink" title="Elysia grandifolia">Elysia grandifolia</a></b></i> beating in its back?