The largest ray in the world (up to 8m wide!), the giant manta is a graceful and gentle ... extremely intelligent and possess the largest brain of any fish. Glial cells are thought to be a sign ...
A US military submarine that looks like a giant metal manta ray and is currently under development passed its first major ...
It is also more energy-efficient than its previous iteration and can swim not just on the surface, but upward and downward, just like an actual manta ray. Another research team at MIT used the ...
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