How much do you know about invertebrates, probably beyond the fact that they’ve no backbone? Increase your knowledge with these facts about invertebrates.
Invertebrates, creatures lacking a backbone, dominate the animal kingdom, with over 19 times the number of species compared to vertebrates! Despite their numbers, we tend to overlook these incredibly interesting animals.
Open your mind and be amazed! Learn facts about invertebrates to expand your knowledge base.
High 5 Facts About Invertebrates
Life on Earth gets pretty alien when you start looking at invertebrates. Keep reading to learn 5 fun facts about invertebrates!
1. Roll Call
Who makes up this group of critters?
Animals that fall into the invertebrae classification include:
· Insects (bees, beetles, alderflies, butterflies, moths, grasshoppers, etc)
· Arachnids (spiders, scorpions, etc)
· Mollusks (slugs, snails, octopi, squid, clams, etc)
· Crustaceans ( shrimp, crab, lobsters, etc)
· Marine invertebrates (jellyfish, sea anemones, starfish, sponges, coral, etc)
· Annelids (earthworms, leeches, polychaetes, etc)
Since over a million invertebrates species exist, this is not the full list. But, you can get the idea of the cool creatures that live life without a spine!
2. Gender Roles
While some invertebrates are delicious, meaning that they come into this world with either male or female reproductive organs, many do things a little differently! A number of these animals, typically the attached, slow-moving, or parasitic, are hermaphroditic.
This means that they either possess both male and female parts or that they can change gender. The animals that contain full sets of both, like tridacna derasa, can actually impregnate themselves and reproduce alone!
3. Spineless and Brainless?
Don’t lose your head over these interesting facts about invertebrates, but some don’t even have one. Unlike vertebrates, invertebrate animals do not possess a centralized brain that they need headspace to store. Instead, the function with a neural network that runs throughout the body.
Many headless critters fall under the echinoderm phylum, like starfish, sand dollars, sea cucumbers, and sea urchins. Headless species from different phyla include clams, oysters, coral, and jellyfish.
4. Taking Measure
As Darwin pointed out, this world thrives on competition. So let’s make this a contest.
The award for invertebrate phylum with the most members goes to the Arthropoda! Arthropods, like insects, crustaceans, and arachnids, possess an exoskeleton, paired joint appendages, and a segmented body! At any one time, Earth will hold about 10 million living arthropods!
Next, the award for the largest invertebrate goes to the colossal squid! These giants can grow between 39 and 46 feet and live deep in the Southern Ocean.
Last, the oldest species on Earth happens to be an invertebrae! This award goes to the 450 million-year-old horseshoe crab!
5. Out of This World
You can actually see invertebrates from space! Well, only the spineless creatures that make up the Great Barrier Reef. This structure is so massive that you can view it from outside of the world’s atmosphere.
Learn to Love Your Earth
Why take time to learn facts about invertebrates? Because learning about the amazing wonders living in our world will help you care more about the planet.
We only have one world to live in and should do our best to take care of it. Read more interesting facts and important eco news on our website!