Hattie 18-inch Marine Biologist Doll
Hattie 18-inch Marine Biologist Doll
Detail of SCUBA accessories for dolls
Hattie using flashlight
Hattie 18-inch Marine Biologist Doll
Hattie 18-inch Marine Biologist Doll
Detail of SCUBA accessories for dolls
Hattie using flashlight

Hattie – Marine Biologist Doll

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Dive into fun with this 18-inch marine biologist doll!

Let’s make a few waves of our own!
Swim towards your professional goals and splash into adventure with Hattie, the 18-inch Our Generation Professional Marine Biologist Doll! She’s diving into her dreams and learning lots about the ocean and all of its exciting life along the way.
Because we’re a very special generation of girls, aren’t we? We don’t feel the need to define who we are. We’re just us, and proud of it! We love to do our hair, wear skirts, and dig in the dirt (occasionally all at the same time, if we feel like it.) We’re curious about laser beams while we’re chasing after our big dreams. This is our time. This is our story.

Scuba Diving Accessories for 18-inch Dolls!

Ready for underwater adventure!

Hattie has lovely sea-green eyes and long, straight red hair that’s styled in a braided ponytail. Have fun brushing and styling her hair in all kinds of great hairdos! Hattie is passionate about ocean conservation and wears the perfect outfit to help her dive into the fun, featuring a blue and purple wetsuit, purple flotation vest with air canister on the back, glittery pink swim fins, a diving mask, and a diving flashlight that really lights up! Help Hattie protect the oceans and have tons of fun along the way!

Related Products for a World of Play!

There are so many great Our Generation dolls, accessories, and outfits to choose from! You can create your very own world of imagination and play!
Marine Biologists like Hattie spend a lot of time under the waves, doing research and exploring underwater. Help Hattie get to her research site using the OG Off Roader, a 4×4 vehicles that’s perfect for cruising along the coast. When Hattie is done her work for the day, she can catch a few waves with the included surfboard!
Marine Biologists like Hattie need to do a lot of experiments to discover new things about the ocean. Set up a laboratory where Hattie can do her research with the OG Schoolroom Science Lab! This set has a microscope, work bench, and all kinds of cool accessories to help Hattie make a great new discovery about the oceans!
At the end of a long day, Hattie can relax in the Seaside Beach House, a happy home on the shore that has lots of great features like a fully stocked kitchenette, a pull-out bed, and a star projector!

Small parts.

Not for children under 3 years.
Specialty Doll #BD31218
Comes with:
  • 1 non-posable 18-inch doll
  • 1 swimsuit
  • 1 diving mask
  • 1 pair of fins
  • 1 diving vest
  • 1 air tank
  • 1 functioning diving light
Product Details:

    All About Hattie the Marine Biologist

  • 18-inch Professional Doll - Marine Biologist with long red hair and green eyes
  • Includes doll, wetsuit, vest with air tank, swim fins, mask, & working diving light
  • Compatible with most 18-inch dolls including American Girl and Journey Girl
  • Suggested for Age 3+ (small parts)
  • No batteries required

Caring for Your Our Generation Hair Play Doll


Hattie arrives with her hair pulled back in a braided ponytail, but you can style her hair in a lot of different ways!
First things first - haircare for your doll will be easier with the proper tools!
We recommend using a round-tipped wire brush.
You will also need a small spray bottle filled with water. The best kind to use will be able to spray a very fine mist (instead of a strong jet).
Second, make sure to avoid heat and styling products on your doll's hair (and body)! Heated styling tools like hair dryers or straighteners and products like gels or mousses can permanently damage your doll.

When you first undo Hattie's ponytail, her hair might be a little kinked from staying in one style for so long as she made her journey to you.
To help straighten her hair, we recommend very lightly misting her hair with water - not too much! - to remove static and make the hair easier to brush.
Next, use the wire brush and very gently but firmly brush Hattie's hair, starting at the ends and working your way up. Let her hair air-dry, and repeat this process until her hair is as straight as you like it!

Important Tips

OG Dolls are always ready for fun and adventure. Just remember - the BEST kind of adventure for your OG Doll is in your imagination!
Your Our Generation doll has a cuddly, soft body that should not get wet. Pretend swimming is ok! But please do not submerse your doll in water.
OG Dolls love pretending to play on the beach…but please make sure not to let your doll sit in the sun for too long…exposure to heat of any kind can cause serious harm to your doll!
We know you will do everything you can to keep your doll happy and healthy.