Cover image: Pictured is the siphonophore Praya dubia deploying its tentacles in the ocean current. Siphonophores are marine animals with elaborate batteries of stinging cells on their tentacles. Through analysis of siphonophores' evolutionary history, Alejandro Damian-Serrano et al. found that predators specializing in one type of prey can become generalists or switch to another prey type. These changes are linked to shifts in the morphology and mode of evolution of the prey-capture apparatus. The findings suggest that predatory specialization may not be an evolutionary dead end. See the article by Damian-Serrano et al., e2005063118. Image credit: Patrick Webster (photographer).