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4722 Crain Hwy
White Plains, MD 20695
Maryland Crabs & Crab Meat Buy the BEST!
Washington DC, Prince Georges County, Charles County and Southern MD's destination for Maryland Crabs & Crab Meat
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Captain Mo's is Now Celebrating their 21st Anniversary
Serving Southern Maryland and Washington DC with Maryland Crabs!

Captain Mo's Seafood Carryout has been the premier location since 2004 for anyone in Washington DC, Prince Georges County, Charles County or Anne Arundel County, Maryland or the Southern Maryland areas for finding fresh Maryland steamed crab and spiced shrimp, snow crab legs and oyster seafood carryout.

It is family owned and operated located in the heart of Southern Maryland just south of Waldorf in White Plains. Captain Mo's is convenient not only to Charles but St Mary's and Calvert County. The owner brings over 20 years of crab and seafood industry experience to this business with careful attention to detail day in and day out of how the seafood is prepared. Come in to see us soon!


This Chesapeake crustacean is probably the most enduring symbol of Maryland. Mature, blue crabs average five to seven inches across, and are most plentiful from late spring through the fall, although crabmeat is available fresh or pasteurized year-round.

CM steamcrab

Crab Sizes

  1. Small males
  2. Regular males
  3. Medium males
  4. Large males
  5. Jumbo males
  6. Females of mixed sizes

Small Males, Regular Males, and Female Availability

  1. Half or full dozen
  2. half bushel (3.5 - 4 dozen)
  3. bushel (6.5 - 7 dozen) quantities

Medium, Large and Jumbo Males available by the dozen only.

The next time you want succulent Maryland Steamed Crabs, shrimp, or seafood, head to Southern MD or call in your order to Captain Mo’s Seafood!

Shrimp Crab

Crab and Seafood Spices

  1. All Crabs are cooked in J.O. Spice.
  2. All Shrimp are Steamed and Spiced or Extra Spice Upon request.
  3. Mixes are available for Maryland Style Crab Soup and Cream of Crab Soup.

Accessories available include:

  1. Mallets
  2. Crab Knives
  3. Vinegar
  4. Crackers

Soda is also available.

4722 Crain Highway
White Plains, Maryland 20695

Map & Directions


March Hours

MTW closed
Thursday 12pm-6pm
Friday 12pm-6pm
Saturday 12pm-6pm
Sunday 12pm-6pm

Captain Mo's Seafood Counter

*** All Phone Orders will only be held for 20 Minutes after pickup time. ***
Unless Sold Out Earlier, Check Facebook for Updates.

All Sales final.

We have Gift Certificates.

Here are some tips for Seafood Lovers Prepared by the National Fisheries Institute:

  • Once purchased, refrigerate products immediately.
  • For optimal freshness, use seafood products within three days.
  • If you purchase live shellfish, (i.e. lobsters, crabs, oysters, clams, and mussels), discard any that die during storage.
  • Thaw frozen seafood in the refrigerator or under cold running water, not at room temperature. Marinate seafood in the refrigerator.
  • To cook, measure fish at its thickest part. Figure 10 minutes of cooking time per inch of thickness.

Captain Mo's Steamed Crabs Exterior

Maryland Seafood... It's as good as it Looks!

All Major Credit Cards Accepted

Captain Mo’s Seafood is the premier Maryland, DC, and PG steamed crab and seafood destination in Waldorf and Southern MD. Come to Captain Mo's for the finest steamed Maryland crab seafood market and carryout, spiced, jumbo shrimp, snow crab legs and oysters. Captain Mo's serves customers from these areas: White Plains, Waldorf, La Plata, Hughesville, Bryans Road, Bryantown, Hughesville, Indian Head, Saint Charles Fort Meade, Upper Marlboro, Brandywine, Fort Washington, Greenbelt, Beltsville, Clinton, College Park, Laurel, Hyattsville, Landover, Bowie, Glenn Dale, Mitchellville, Cheverly or Crofton Indian Head, Upper Marlboro, Annapolis, Arnold, Severn, Severna Park, Edgewater, Davidsonville, Crofton, Pasadena, Crownsville, Millersville, Linthicum, Jessup, Lothian, Glen Burnie, Washington DC, Prince Georges County and Charles County Maryland and Anne Arundel County.

About Us

We are a family owned and operated retail seafood crab house located in White Plains, MD. We’ve been providing our loyal customers with fresh seafood since 2004 & plan to for many more years to come!

2022 UPDATE:

After 18 years in the retail business Captain Mo decided this February 2022 to turn the ship over to his youngest daughter, Grace Bosse. He is still selling crabs & other frozen seafood in the wholesale market as he has been since he was a teenage boy. Grace is definitely following right in her daddy’s footsteps in the seafood business. She has been working in the store since 2015 under her mother and father’s wing. Captain Mo prepared her for this time in previous years by letting her manage the shop for the past 2 years.

Everything is still the same & she still buys all her crabs from Captain Mo! Captain & Mrs. Mo are doing well and just wanted some space from the business to enjoy some much-needed time off.


Here’s to another summer spent in the crab house instead of on the beach! I have been waiting on this opportunity for many, many years now. Although when mom & dad told me, I couldn’t believe it. I officially took over the business on April 1st, 2022. It didn’t feel any different, as many of my loyal weekly customers know, I’m always here anyways! I do miss working with my dad the most. Majority of the time he was in the back, but I could always go sit down and talk to him or share a beer with him after a long day in the heat.

The past 2 years I’ve been pretty much managing the shop and dad’s been working the phone selling crabs on the wholesale market while mom was at home doing all the office work. So I do believe I have a pretty good idea of what’s going on around here and I can confidently say, I’ll do just about everything the same way they did.

I’m looking forward to many more years of business and following in my parents’ footsteps. I’m hoping I can add more products for sale & we can start accepting EBT again soon!

About Us Grace

If anyone would ever like to speak to me directly, please send an email to me at captainmos.grace@gmail.com. I will get back to you within 7 business days.

Thank you for all of your support & loyalty.

Sincerely your friend, Grace Bosse