That's a bit exaggerated - monkeys can't fly, but both dolphins and octopuses can swim. I'm aware octopuses prefer to stay at the bottom, while dolphins have to come to the surface regularly to breathe, but for me it's still the same environment...

Tidal basins and ocean bottoms are very different from the open ocean surface. Much like tree tops and 3 miles in the air are different. Both are up in the air, but still quite different, just like "ocean" but still different.

You know monkeys can swim? Do you know what happens to a monkey 2-6km under the surface? Monkeys can also climb trees, very high. Monkey still no condor, sadly.