American Oceans

Sea Cucumbers

Sea cucumbers are oceanic invertebrates that can range in size but can grow up to nearly seven feet long. The smallest ones are a mere few inches long.

oceanic sea cucumbers invertebrates powerful tentacles around mouths

These animals have soft bodies and powerful tentacles around their mouths, which they use for sucking in food from both the ocean floor and water itself.

They tend to move slowly but can burrow deep in the seafloor to escape predators.

Sea Cucumber Diet

These animals aren’t the best hunters in the seven seas, preferring to scavenge their food rather than track it down.

sea cucumber scavenge plankton for food diet

They generally eat a mixture of plankton, algae, and other small organisms, as well as waste. Sea cucumbers are omnivores, meaning that they eat both plant and animal material, depending on what is available.

New research shows that these animals can also benefit from a diet of seagrass and seagrass sediment, although sea cucumbers will not necessarily seek out seagrass in the wild.

These creatures live in all ocean areas, so their diet tends to vary and depend upon weather changes and migration patterns.


You can find sea cucumbers just about anywhere, although most of them prefer to stay in the shallows.

mating sea cucumbers habitat in the shallows

Many sea cucumbers prefer tropical waters, making their habitats in the Indian Ocean and Pacific. Spot sea cucumbers on coral reefs and near sandbars, where they like to feed.

Although most sea cucumbers are harmless to humans, you should avoid picking them up as doing so may harm them or cause them to become disoriented.

These creatures are benthic, which means that they live on the seafloor, but their young float in the currents and are considered planktonic animals.

Amazing Organs

One of the fascinating aspects of sea cucumbers is how they defend themselves against predators.

In addition to burrowing, sea cucumbers can shoot out their internal organs via their anuses and regrow new ones.

By getting rid of their internal organs, sea cucumbers can temporarily confuse predators, allowing the sea cucumber to get away quickly.

There are not many creatures who can regrow organs, and this exceptional talent is most likely how sea cucumbers have managed to thrive and survive for as long as they have.

Some research suggests that sea cucumbers have been around for millions of years.

Many Variations

In addition to being an ancient animal, sea cucumbers come in many different shapes and sizes. There are 1,250 known species of sea cucumbers.

Since many of these incredible animals live on the ocean floor in the sea’s deeper regions, we might never know how many real varieties there are.

We know that sea cucumbers come in many different sizes, shapes, and colors and live everywhere, moving along the bottom of the ocean with their tentacled feet.

Sea cucumbers are one of the most prevalent creatures in our oceans, and they are also some of the most mysterious and fascinating.

Their natural ability to regrow organs and their sheer longevity on our planet make them truly exceptional.

1 comment

  • Can you squash a sea cucumber if you tread on it while swimming? I heard if you do it sticky and hard to get off your foot.