#896 How big was a Megalodon?
How big was a Megalodon? The largest ones could have been 20 meters long. Megalodon was a species of giant mackerel shark. Mackerel sharks have two dorsal fins, an anal…
How big was a Megalodon? The largest ones could have been 20 meters long. Megalodon was a species of giant mackerel shark. Mackerel sharks have two dorsal fins, an anal…
How do deep sea creatures see? They don’t see color, they have very large eyes, they use other senses, or they produce their own light. Light doesn’t penetrate very far…
What color is the sea? It is technically blue, but that depends on the depth and what particles are in the water. The sky is blue because the blue light…
How have sea levels changed over time? Over the last 542 million years they have varied from 130 m lower than their level today to a theoretical 300 m higher…
Is a starfish a fish? No, starfish are not fish. Fish are vertebrate animals that live in the sea, have gills to breathe through, have a two chambered heart, are…
Why can fish swim so fast? They move their bodies from side to side in such a way that they produce a backwards moving wave in their bodies, which pushes…
Why are some beaches rocky and some sandy? It is because of the energy of the sea, the source of the particles, the shape of the shoreline, local weather, and…
How did the Polynesians navigate? They used star compasses, maps of waves made using sticks, clouds, the color of the sky, and birds. From about 5,000 years ago, groups of…
I learned this today. How does a desalination plant work? A desalination plant makes freshwater from seawater by using reverse osmosis. Humans and animals obviously cannot drink salt water. Fish…
I learned this today. Deep sea fish can survive because they don’t breathe in the same way that we do. However, even they cannot survive at the very bottom of…