3 Ways to Keep Blue Crabs Alive - wikiHow (2024)

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1Storing Them in a Cooler

2Storing Live Blue Crabs in Water

3Creating a Stress-Free Environment

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Co-authored byMarshall Stephens

Last Updated: May 10, 2023

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If blue crabs are dead when you cook them, their meat will be mushy, and you risk ingesting harmful bacteria that grow inside dead crabs' shells.[1] By keeping blue crabs in a cool, moist, and stress-free environment, you will be able to help blue crabs stay alive. Place the crabs in a cooler or a bushel basket that is layered with ice packs and covered with a moist burlap sack. If you live near the water where the crabs were caught, you can also store them in a live box placed in the water. Remember to never store the crabs in the refrigerator or in a storage space with standing water.

Method 1

Method 1 of 3:

Storing Them in a Cooler

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  1. 1

    Buy a cooler. Buy a regular sized cooler from your local depot or sporting goods store. If you are planning to store more than five crabs, it is recommended that you buy a larger cooler. This way you will not need to stack the crabs on top of each other.[2]

    • Alternatively, you can use a wooden bushel basket to store the crabs. This method is ideal for commercial Watermen.
  2. 2

    Layer the bottom of the cooler with icepacks. This will keep the temperature around 50 degrees Fahrenheit. A temperature cooler than 50 degrees Fahrenheit will kill the crabs. You can place a moist towel over the icepacks to keep the cooler moist and to prevent the crabs from becoming too cold.[3]

    • Alternatively, you can place ice, covered with a moist cloth, at the bottom of the cooler. However, you will need to drain the water from the melted ice periodically. Any standing water can cause the crabs to suffocate.[4]
    • Do not put ice or ice packs on top of the crabs.

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  3. 3

    Cover the cooler with a moist burlap bag. This is to ensure that the crabs stay moist. If blue crabs are not kept moist, their gills will dry out, and they will die. It is recommended that you use a burlap bag because it allows oxygen to pass through. The crabs need to be well oxygenated in order to stay alive.

    • Place the cooler in a dark, shaded area away from the sun. This will also prevent the crab’s gills from drying out.[5]
    • Blue crabs can live out of the water for up to 24 hours as long as they are kept cool and moist.
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  1. 1

    Buy a standard five-gallon bucket. Drill holes into the sides and bottom of the bucket. The holes need to be big enough to allow water to flow through, but small enough to ensure that the crabs cannot escape.[6]

    • Alternatively, you can buy a specially designed wooden box to store the crabs in.
    • This method is ideal if you live near the water where the crabs were caught. If not, use the cooler method to store the crabs.
  2. 2

    Place a mesh lid on top. Go to your local hardware store and buy wire mesh. Take your mesh and bend it over the top of the five-gallon bucket. Staple the sides of the mesh, that overlap the top of the bucket, to the sides of the bucket.[7]

    • When you buy the mesh, the dimensions should be at least one inch larger than the size of your bucket.
    • Use a heavy duty staple gun to fasten the mesh to the sides of the bucket.
  3. 3

    Feed them once or twice per day. If you are storing live blue crabs in the water, you will need to feed them. Adult blue crabs will eat oysters, hard clams, dead or live fish, crabs (including blue crabs), shrimp, organic debris, aquatic plants, and the leaves and shoots of sea lettuce, eelgrass, salt marsh grass, and ditch grass.[8]

  4. 4

    Keep them cool. Keep the crabs cool and moist in a cooler or bushel basket. The optimal temperature is about 50 degrees fahrenheit. Any temperatures colder than that can kill the crabs.[9]

    • Do not refrigerate them. Because the temperatures in a refrigerator are too cold, refrigeration will kill blue crabs.
  5. 5

    Allow crabs to warm to room temperature before cooking. Chilled crabs will be in a dormant state and can appear to be dead. Before cooking, let the crabs warm to room temperature. The crabs will become animated once they are room temperature. This way you can tell which crabs are alive and which crabs are dead.[10]

    • Never cook dead crabs.
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Method 3

Method 3 of 3:

Creating a Stress-Free Environment

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  1. 1

    Limit shaking. Stress can also cause blue crabs to die. Once dead, blue crab meat is mushy and unsuitable for cooking and eating. Too much shaking can stress blue crabs. Therefore, avoid shaking your cooler or bushel basket while storing and transporting the crabs.

  2. 2

    Keep them in one spot. Dumping or moving the crabs from one storage space to another can cause stress, as well. Try to store the crabs in one spot. If you need to move the crabs from one cooler to another, do not dump them into the other cooler all at once. Place them one by one into the other cooler.

  3. 3

    Don’t pile them up. Piling blue crabs on top of each other will also cause undue stress. To avoid this, have an extra cooler or bushel basket handy in case you run out of room in your first cooler or bushel basket.[11]

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  • Question

    What should I feed blue crabs to keep them alive?

    3 Ways to Keep Blue Crabs Alive - wikiHow (17)

    Community Answer

    If it is an adult, you should feed them fish, worms, plants. Their favorite foods are thin-shelled bivalves.

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  • Question

    Can I keep blue crabs as pets?

    3 Ways to Keep Blue Crabs Alive - wikiHow (18)

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    Yes, with proper care you can keep blue crabs as pets. Just make sure that you take good care of them.

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  • Question

    I catch blue crabs for a living. My problem is that in the time between catching them and transporting them (I ice them, sort the different sizes and types, and then crate them), I lose a lot of crabs. I live in south Mississippi, so it's hot. What can I do to stop them from dying?

    3 Ways to Keep Blue Crabs Alive - wikiHow (19)

    Community Answer

    There are a couple of things you can try. It is recommended that commercial fisherman use wooden bushel baskets to store the crabs. Place a moist burlap bag at the bottom of the basket (over the ice) and over the top of the basket, to prevent the gills from drying out. If you are using ice (instead of icepacks) to chill them, it could possibly be the standing water that is causing them to suffocate and die. Make sure to drain any water that comes from melted ice. Also, try to avoid stacking the crabs on top of each other. This can cause them undue stress, and even death.

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    Thank you for your feedback.
    If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission.Support wikiHow

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      About This Article

      3 Ways to Keep Blue Crabs Alive - wikiHow (34)

      Co-authored by:

      Marshall Stephens

      Aquarium Specialist

      This article was co-authored by Marshall Stephens. Marshall Stephens is an Aquarium Expert at Private Oceans Aquariums in West Palm Beach, Florida. Marshall has over 20 years of experience in the aquarium industry and focuses on captive-bred animals. They specialize in tropical and marine aquariums and are a contributor to the Loggerhead Marine life center in Jupiter Florida. This article has been viewed 246,908 times.

      49 votes - 85%

      Co-authors: 13

      Updated: May 10, 2023

      Views:246,908

      Categories: Crabs

      Article SummaryX

      To keep blue crabs alive, start by layering the bottom of a cooler with ice packs, and placing a moist towel over the packs to prevent the crabs from getting too cold. You can also use ice instead of ice packs, but make sure to drain the melted ice periodically to keep the crabs from suffocating in the water. Then, place the crabs in the cooler and cover it with a damp burlap bag to keep it moist, since the crabs will die if their gills dry out. Finally, place the cooler in a dark, shaded area to prevent it from drying out in the sun. To learn how to create a stress-free environment for your blue crabs, read on!

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      Reader Success Stories

      • 3 Ways to Keep Blue Crabs Alive - wikiHow (35)

        Anonymous

        May 11, 2017

        "I live on the salt water where I catch my crabs, and many times need to accumulate more before cooking them...." more

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      FAQs

      3 Ways to Keep Blue Crabs Alive - wikiHow? ›

      Like all other critters in the Chesapeake Bay, blue crabs need oxygen to survive. When the water's oxygen content is too low, blue crabs have been known to come out of the water and onto the land to escape suffocation. This phenomenon is known as a “crab jubilee.”

      What do blue crabs need to survive? ›

      Like all other critters in the Chesapeake Bay, blue crabs need oxygen to survive. When the water's oxygen content is too low, blue crabs have been known to come out of the water and onto the land to escape suffocation. This phenomenon is known as a “crab jubilee.”

      How do you prolong crab life? ›

      Keep them Stored in a Cool Environment

      If you are storing them in an industrial cooler, make sure they are not sealed in for long periods of time and that they have access to oxygen. For the best cooling and storage for crabs, a sealed bag of ice can be placed on top or on the bottom of them to keep them cool.

      What do crabs need to stay alive? ›

      The crabs need to be well oxygenated in order to stay alive. Place the cooler in a dark, shaded area away from the sun. This will also prevent the crab's gills from drying out. Blue crabs can live out of the water for up to 24 hours as long as they are kept cool and moist.

      What kills blue crabs? ›

      Kill the crab humanely before you remove the shell.

      Use a knife or ice pick to stab the crab through its shell 1 inch (2.5 cm) below its mouth. You can also boil the crab for 1 minute to kill it. Numb the live crab in the freezer for 15 minutes before boiling.

      Do blue crabs like salt water? ›

      Blue crab habitats include underwater grasses and oyster reefs, and they range from shallow, brackish waters to deeper, saltier waters.

      Do blue crabs need air? ›

      Expand/Collapse How do blue crabs breathe, and how long can they stay out of water? Just like fish, blue crabs breathe using gills. However, unlike fish, blue crabs can survive out of water for long periods of time-even over 24 hours-as long as their gills are kept moist.

      What are some adaptations that help the blue crab survive? ›

      Most blue crabs live in TURBID or cloudy water. Because of this they need a way to know where they are going. They use their antennae to smell and sense chemicals in the water, and also to feel the current and movement of water. Blue crabs also have COMPOUND EYES that sit on stalks.

      What helps crabs survive? ›

      Crabs have adaptations to help them survive. One of these adaptations is an exoskeleton which is a hard, rigid covering that protects the soft internal organs of the animal. The exoskeleton is made of a protein called chitin and calcium carbonate.

      How do you maintain crabs? ›

      Maintain the environment properly.

      Water should be changed partially (or entirely) one to two times each month. Make sure that the water you add maintains the salinity at the proper level. Crabs exposed to pure fresh water without salt will, over a long period, die.

      How do you keep sea crabs alive? ›

      Heat the tank to 75 degrees with an undertank heater. Maintain this temperature--ideally at 70 percent humidity--to mimic the natural conditions that your sand crab is used to. Put a wet sea sponge into the tank to increase the humidity if the environment does not naturally sustain a 70 percent humidity reading.

      What do blue crabs do to survive? ›

      Crabs are scavengers, eating everything from fish, oysters, clams, snails, shrimp, and worms to other crabs. Blue crabs use underwater grasses for shelter from predators and a place to feed on small invertebrates and plant matter.

      What do crabs hate the most? ›

      While crabs don't congregate in herds, their behavior in groups is a perfect example of Herd-Think. Crab fishermen have learned a curious truth about the crustaceans they seize from the sea. They've learned that crabs hate succeeders.

      How long do live blue crabs last in the fridge? ›

      Live, fresh crab can remain in a refrigerated environment for about 1 to 2 days, although they begin to quickly lose moisture and will eventually die after that time. After that, it's time to cook them up.

      How long do pet blue crabs live? ›

      Blue crabs generally live for 3 or 4 years. They reach maturity in 12 to 18 months.

      Can you keep blue crabs in a tank? ›

      Blue crabs are naturally inclined to saltwater, and this preference extends to their life in captivity. In a saltwater aquarium, they can thrive, exhibiting natural behaviors and maintaining good health. The environment mimics their natural habitat, providing them with the necessary conditions for a fulfilling life.

      How do you keep sea crabs alive at home? ›

      The best way I know of for keeping crab alive at home for any period of time is by constantly aerating their water. This can be done manually; by literally "stirring up" their water to replenish their oxygen supply or it can be done automatically; through the use of an aerator.

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