Seahorses have a circum-global distribution in tropical to temperate coastal waters. Yet, seahorses show many adaptations for a sedentary, cryptic lifestyle: they require specific habitats, such as seagrass, kelp or coral reefs, lack pelvic and caudal fi
The presence of26Al (half-life T1/2 = 0.705 Ma1) in the early Solar System, and its possible role as a heat source for planetary and asteroidal melting and early metamorphism, was predicted2more than 60 years ago. The discovery3of excesses of26Mg in Allende meteorite calcium-alum...