Katarina Visser

Are Whales More Active in the Morning or Afternoon?

How Many Sets of Teeth Do Sharks Have?

Can an Octopus Survive Out of Water?

Where Do Seashells Come From and How Are They Made?

What Shells Have Pearls in Them? Identifying Pearl Producers

Do Shrimp Lay Eggs? How Shrimp Reproduce and Carry Young

How Much Oxygen Do Fish Need to Survive?

Is There a Black Shark? Types of Fish & Sharks Explained

Do Sharks Have Rough Skin? The Science of Why

Are Catfish in Lakes? Common Species & Habitats

How Many Narwhals Are Left in the World?

What Do Salmon Eat Throughout Their Life Cycle?

How Much Does the Average Dolphin Weigh?

Is a Narwhal a Whale? A Look at Its Classification

Are Box Jellyfish in Hawaii Deadly?

Why Do Dead Fish Float? The Science of Buoyancy

What Are Clams? A Look at These Bivalve Mollusks

What Eats Moray Eels? Their Predators and Defenses

Is There Salmon in Minnesota? Species and Locations

How Big Do Moray Eels Get? Species & Record Sizes