Explore the Outdoors!
A crab’s anatomy is very different from a human’s. A crab has a segmented body with an exoskeleton, which is a hard outer shell that protects the animal’s body and organs. Crabs have a pair of eyes, two antennae used to sense their surroundings, and five pairs of walking legs. The front set of walking…
Different crab species have different ways of breathing to suit their habitat. Some crabs live in water, others on land. Additionally, many crabs spend a large proportion of their time underground. The blue land crab (not to be confused with the blue crab, which is water-adapted) can move seamlessly between water and land. On the…
There are over 4500 species of crabs, most of which are scavengers, meaning that they will eat anything in the wild environment, dead or alive. Crabs are omnivorous crustaceans that eat a varied diet that includes many of the animals living in the sea. The primary dietary items of crabs consist of mollusks, other crustaceans,…
Learn if and what crabs eat snails and when! And do any snails eat crabs?!
Do you know if and how crabs sleep? Do they sleep laying on their back – narhh – read on to find out!
I have previously written about how fish, sharks and whales do not produce saliva because they are fully submerged in water. If you spent all your time in the water, making extra liquid for lubrication to aid swallowing of food does not make sense. Therefore, many sea-dwelling animals have completely lost their ability to produce…
What do crabs actually eat? In captivity or in the wild? Explore the diets of 10 different crab species here!
You might have noticed that I recently wrote two blog posts on whether birds and fish make saliva. This time I will focus on reptiles, and one particularly interesting type: Iguanas! Iguanas, like other reptiles, do have saliva, which appears clear when the lizard is healthy. But they do not use it to spit! Iguanas…
Sea sponges are invertebrates. Sponges are an unusual group of animals in that they lack a nervous system. Instead, the sponges have ‘sensory cells’ that can detect chemicals in the water. Although sponges do have a skeleton made from calcium as we do, this is a very different kind of skeleton from what vertebrate animals…
Sponges are fascinating creatures that have been around for over 500 million years! These simple animals are actually very complex and play an important role in the marine ecosystem. Sponges are omnivores, which means they will eat just about anything they can filter from the water. They are filter feeders and use special cells to…