8 Types of Shells Preferred by Hermit Crabs

Hermit crabs belong to the group of crustaceans known as decapods, which have a soft, vulnerable abdomen. To protect themselves from predators and environmental hazards, hermit crabs seek out empty gastropod shells to inhabit. These shells not only serve as a protective barrier but also provide a portable home that the crab can carry with it as it moves about its environment.

In this article, we will explore the various types of shells that hermit crabs prefer, discussing their characteristics, availability, and considerations when selecting shells for your crustacean companions.

Factors Influencing Shell Preferences

Shell Size:

Hermit crabs prefer shells that fit their bodies snugly, not too tight but with enough room for them to retract fully inside. Choosing shells with appropriate sizes is crucial to ensure the comfort and safety of the hermit crab.

Shell Openings:

The size and shape of the shell opening also influence a hermit crab's choice. Different hermit crab species exhibit variations in their body shape and thus prefer different shell opening sizes and shapes. Providing a variety of options allows hermit crabs to select shells that suit their individual preferences.

Here Are 8 Types of Shells Preferred by Hermit Crabs

1. Argyrostoma:

Argyrostoma shells are popular among hermit crabs due to their sturdy build and attractive appearance. These shells often have elongated shapes, providing ample space for the hermit crabs to grow.

2. Setosus:

Setosus shells are known for their smooth and glossy exteriors. They offer a comfortable living space for hermit crabs and provide a visually appealing shell option.

3. Pica:

Pica shells, characterized by their round shape, are often favored by hermit crabs. These shells are typically lightweight, making them ideal for smaller hermit crab species.

4. Petholatus:

With their intricately patterned exteriors, Petholatus shells are a popular choice among hermit crabs. These shells provide both functional and aesthetic benefits.

5. Jade:

Jade shells are known for their striking green hues. These shells offer a unique and visually attractive option for hermit crabs.

6. Bruneus:

Bruneus shells, also known as "Chocolate Chip" shells, feature distinctive brown spots on a cream-colored background. These shells are highly sought after by hermit crab enthusiasts for their beautiful patterns.

7. Mexican Turbo:

Mexican Turbo shells are prized for their sturdy construction and their availability in various sizes. They make excellent choices for larger hermit crab species.

8. Babylonia, Murex, Whelk, and Nerite:

Babylonia, Murex, Whelk, and Nerite shells are also commonly chosen by hermit crabs. Their unique shapes and patterns provide a diverse range of options for these discerning creatures.

Ensuring the Right Shells for Your Hermit Crabs

1. Measuring the Existing Shell

Measuring the existing shell of a hermit crab is crucial when selecting a new shell. A new shell should be slightly larger, typically around 1/4 inch wider, to provide ample growth space for the hermit crab.

2. Offering Variety and Options

Hermit crabs may exhibit individual preferences when it comes to shell shape and opening sizes. Providing a variety of shells ensures that hermit crabs can select shells that suit their specific needs and preferences.

3. Consideration for Species and Size

Different hermit crab species may have varying preferences for shells. It is essential to research species-specific shell recommendations to meet the unique requirements of your hermit crabs.

Conclusion

Hermit crabs prefer certain types of shells that provide a suitable living space for them. Some of the more common types of shells chosen by hermit crabs include Argyrostoma, Setosus, Pica, Petholatus, Jade, Bruneus, Mexican turbo, Babylonia, Murex, whelk, and Nerite. These shells are readily available for purchase and can be found in pet stores or online retailers that specialize in hermit crab supplies.

It's important to note that hermit crabs have different shell preferences based on their size and species. Providing a variety of shell options in different sizes and shapes is crucial to meet the needs of different hermit crabs.

To ensure you choose the right shells for your hermit crabs, it is recommended to measure their existing shells and select new shells that are slightly larger, usually around 1/4 inch wider than their current shell. This allows room for growth as hermit crabs grow by periodically shedding their exoskeleton and require larger shells to accommodate their increasing size.

Remember that hermit crabs may also exhibit individual preferences when it comes to shell shape and opening sizes. Therefore, offering a variety of shells for them to choose from will help provide options that suit their personal preferences.