When you think about how animals sleep, you probably picture them lying down in a safe spot. Fish don’t really sleep the way land animals do, but they do rest. Sharks are a bit different from typical fish, and their resting behavior varies quite a bit from species to species. So do sharks sleep on … Read more
When you watch a shark glide through the water, it’s easy to wonder how it breathes. You see dolphins and whales coming up to the surface to breathe air, and you know fish extract oxygen from water somehow. Sharks are fish, but they’re also really different from the small fish you see in an aquarium. … Read more
When you think about fish, you probably picture them covered in shiny, overlapping scales like the ones you see on goldfish or salmon. Sharks are fish too, so it makes sense to assume they have the same kind of scales. But if you’ve ever touched shark skin or seen a close-up photo, you know it … Read more
If you’ve ever watched a shark glide through an aquarium tank, you might have noticed something strange. They never seem to blink, and their eyes stay wide open all the time. This leads to an interesting question about how these predators rest. Fish don’t have eyelids like we do, which makes you wonder how they … Read more
Most people picture sharks as fierce predators that give birth to live young, but the truth about shark reproduction is actually way more interesting and varied than that. Some sharks do give live birth, but others lay eggs in the ocean. These eggs are totally different from bird eggs or any other eggs you’re probably … Read more
When you think about how animals have babies, you probably picture most fish laying eggs in the water. Sharks are fish, so it makes sense to wonder if they follow the same pattern. But sharks are pretty different from your typical goldfish or tuna. Some people are surprised to learn that not all sharks reproduce … Read more
You’re watching a shark glide through the water on a nature documentary, barely moving its fins, looking calm and effortless. The ocean around it is cold, dark, and deep, yet the shark looks completely unfazed, like it belongs there in a way nothing else does. At some point, a simple question pops into your head, … Read more
Sharks are some of the ocean’s most interesting predators, and if you’ve ever watched a documentary about them, you’ve probably noticed they never seem to stop swimming. They’re always on the move, cruising through the water even when they’re not hunting. But why do sharks have to keep moving? Most sharks need to keep swimming … Read more