The reef manta ray (Mobula alfredi) is a tough swimmer. They can travel hundreds of kilometers to feed themselves. The longest recorded movement for an individual reef manta ray was 1,150km, observed in eastern Australia. The reef manta ray (Mobula alfredi) is a tough swimmer. They can travel hundreds of kilometers to feed themselves. The longest recorded movement for an individual reef manta ray was 1,150km, observed in eastern Australia. Plants & Animals Ecology Phys.org – latest science and technology news stories