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Under the Sea Party Theme
Everything You Need for the Perfect Party
Hundreds of decorations, tableware, balloons & accessories — all at bulk prices. Celebrate every occasion in style.
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Beistle
Shark Party Photo Prop
from $9.80
Two photo ops in one prop: one side stages guests as a shark's snack, the other drops them into the middle of a shark attack. Creased sides let it stand upright on any flat surface, so it works as a tabletop photo station with no frame or easel required. At 3 feet 1 inch by 25 inches, it is big enough to read in pictures without taking over the room.
Colors: blue and white
Sold by the package (1 prop) or by the case (6 props)
Beistle
Printed Under The Sea Paper Party Table Runner
from $4.90
Eleven inches wide and 6 feet long, this paper runner lays a printed stripe of blue ocean down the middle of the table and lets plain plates and cups handle the rest. Paper keeps it light and flat, and cleanup is just lifting it off the table when the party ends.Sold by the package (1 table runner) or by the case (12 table runners); one covers a single table, and the case handles a cafeteria.
Beistle
Shark Party Door Cover
from $6.30
A shark on the front door settles the party theme before anyone rings the bell. This blue and white plastic cover measures 6 feet by 30 inches, which fits most standard doors, and it's built durable for indoor or outdoor use, so weather isn't a scheduling factor.Every arriving guest walks through the theme once, which is more than most decorations can claim. Sold by the package (1 door cover) or by the case (12 door covers).
Beistle
Luau Party Plastic Crab
$70.22
Plastic crabs in red with orange print, each 13 by 19 inches. Plastic is the practical choice here: these handle an outdoor table, get wiped down, and pack away for next summer, which is more than tissue decorations can claim. They work on tables, as centerpieces, or as wall accents.Sold by the case (24 crabs).
Beistle
Shark Party Tablecover
from $7.00
Fifty-four by 108 inches of plastic tablecover in a classic blue shark pattern, which drapes a standard 6-foot or 8-foot rectangular table with overhang to spare. Plastic is the right call under a shark party spread; blue frosting and fruit punch wipe off instead of soaking in.One tablecover per package, or a case of 12 covers every table at a full-size pool party.
Beistle
Under The Sea Party Tablecover
from $7.00
Fifty-four by 108 inches of blue plastic, sized for a standard banquet table with enough drop on each side to look finished. Under a sea-themed spread it works as the water itself: everything you set on top floats on blue. Plastic wipes down between the cake and whatever gets spilled after the cake.
Rectangular table cover
Sold by the package (1 tablecover) or by the case (12 tablecovers)
Beistle
Shark Cutout Decorations
from $7.00
Three shark cutouts per package, printed on both sides and running 22.5 to 24.25 inches, which is big enough to look like a proper threat on a wall or window. The double-sided printing means they also earn their keep hung from the ceiling, circling over the snack table.Gray and white. Sold by the package (3 cutouts) or by the case (36 cutouts).
Beistle
Shark Party Silhouettes
from $7.00
Ten black shark silhouettes ranging from 10 to 15 inches, printed on both sides so they read correctly hung in a window or turning slowly from the ceiling. The mixed sizes fake depth: small sharks look far away, big ones look close, and suddenly the room is underwater.
Durable enough for multiple uses
Sold by the package (10 silhouettes) or by the case (120 silhouettes)
Beistle
Inflatable Shark Party Buffet Cooler
from $27.00
Buffet tables never have enough chilled space, and this inflatable shark cooler adds plenty: 28 inches wide by 4 feet 5.75 inches long, room enough to ice down drinks and cold dishes for the whole party. The blue and gray shark design keeps refreshments on theme instead of hiding them in a plain tub, and it doubles as the table's conversation piece.Sold by the package (1 cooler) or by the case (6 coolers).
Beistle
Shark Party Theme Toilet Seat Cover Peel 'N Place Clings
from $3.85
Bathrooms are the one room theme parties forget, and this Peel 'N Place cling fixes that for cheap laughs: a gray and pink shark design that turns the toilet seat into part of the Under The Sea decor. It applies in seconds and peels off just as fast when the party ends.
One 12" x 17" sheet
Sold by the package (1 cling) or by the case (12 clings)
Beistle
Aquarium Insta-View Decoration
from $9.10
Bring the magic of the ocean to your party with this vibrant wall decoration that instantly transforms any space into an underwater paradise. Perfect for Under The Sea celebrations, it creates a stunning backdrop that delights guests of all ages. Let your event shine with colorful aquatic charm that sets the perfect festive mood.
Color: Multicolor
Size: 3' 2" x 5' 2"
Sold by the package (1 Insta-View decoration) or by the case (6 Insta-View decorations).
Beistle
Shark Deluxe Party Sparkle Confetti
from $4.20
Scatter half an ounce of silver shark-shaped confetti down a table runner and the theme registers before anyone spots the cake. That 0.5-ounce package goes further than it sounds for table scatter, and the classic move is tucking a pinch into each invitation. Fair warning: sharks this small migrate into carpet.Sold by the package (0.5 ounces) or by the case (12 packages).
Beistle
Shark Party Whirls
from $7.70
Shark week, but for your ceiling: 12 whirls per package, 6 printed with shark icons and 6 plain, in lengths from 17.5 to 28.5 inches. The mix of lengths is deliberate; alternating them fills the overhead space in layers rather than one straight line, and they spin on ordinary room air.
Colors: blue and gray
Sold by the package (12 whirls) or by the case (72 whirls)
Beistle
Octopus Tentacles Party Toilet Tank Peel 'n Place Cover
from $4.55
Toilet tanks are the one surface nobody expects to be decorated, which is exactly why these earn a laugh. Orange octopus tentacles peel off a 12 by 17 inch sheet and cling to the tank without tape or residue, then come off just as cleanly when the under the sea party wraps.Each package holds 3 orange and beige covers; the case of 36 is for whoever is theming more bathrooms than the average house has.
Beistle
Luau Party Marine Life Props
from $10.50
Marine life in sixteen multicolor props per package, sized 6 inches to 4 feet 3 inches, ready to swim across walls and backdrops. Spread the sizes around: large pieces at eye level, small ones scattered high and low, and the wall reads like a reef with depth instead of a flat lineup of fish. Attach with your own adhesive or pins.Sold by the package (16 props) or by the case (192 props).
Beistle
Party Shark Whirls
from $6.30
Five shark whirls per package, in lengths from 32 to 36 inches, made to hang from the ceiling. The sharks spin with any air movement, so place them near a vent or doorway and the room starts acting like a tank. Staggered lengths keep the group from reading as one flat row.
Colors: blue and gray
Sold by the package (5 whirls) or by the case (30 whirls)
Beistle
Jellyfish Party Panels
from $9.10
Three plastic jellyfish panels per package, each 12 inches wide and 6 feet long, in purple and blue. Hang them from a ceiling or doorway and the length does the work: six feet of trailing tentacle reads as jellyfish even from across the room.
Colors: purple and blue
Material: plastic
Sold by the package (3 panels) or by the case (36 panels)
Beistle
Bubble Party Panels
from $9.10
Transform your Under The Sea party with vibrant Bubble Party Panels that bring colorful sea creatures to life. Each panel measures 12" x 6' and adds an instant splash of fun whether hung on walls or ceilings. Durable and versatile, these panels are perfect for both indoor and outdoor celebrations.
Color: Multicolor
Size: 12" x 6'
Material: Durable plastic
Perfect for indoor and outdoor use
Features colorful sea creature designs
Sold by the package (3 panels) or by the case (36 panels)
Beistle
Shark Stand-Up
from $58.50
Just over four feet on its long side, this shark stand-up is a 3D prop rather than a flat cutout, so it holds up from every angle instead of only head-on. Gray and white, it can carry a shark or under-the-sea theme by itself.
Size: 3' 8.25" x 4' 4" (44.25" x 52")
Sold by the package (1 stand-up) or by the case (4)
Beistle
Shark Party Streamer Set
from $7.35
Shark streamers come flat in this set: 14 gray and white pieces plus a 12-foot ribbon assemble into two finished streamers, each 5.25 inches by 5 feet, ten feet of ocean once both are up. Assembly is easy, and you control the spacing of the pieces along the ribbon.
Colors: gray and white
Sold by the package (1 set) or by the case (12 sets)
Beistle
Plastic Ship's Party Anchors
$98.95
Gray plastic ship's anchors, 25 inches tall, the kind of prop that reads clearly from across a gym or banquet hall. The durable plastic takes handling and goes back into storage for next year's luau or under-the-sea event without complaint.Sold by the case only, 24 anchors per case, which is venue scale rather than single-backyard scale.
Beistle
Inflatable Fish
from $8.40
Four yellow and black inflatable fish per package, each 7.5 by 11 inches, which is small enough to pull triple duty as decoration, game piece, and take-home favor. Inflate the school and scatter them across tables or a kiddie pool; under-the-sea and luau themes both claim them without a fight.Sold by the package (4 inflatables) or by the case (24 inflatables).
Beistle
Luau Party Ocean Floor Border Trim Wall Decoration
from $12.60
Yellow ocean-floor border trim, 24 inches tall and 30 feet long, made to run along the base of a wall. Set it under an undersea backdrop and the ocean gains a floor; the scene stops looking like blue wallpaper and starts looking like underwater.
Wall decoration border trim
Sold by the package (1 wall decoration) or by the case (6 wall decorations)
Beistle
Lobster Bake Pennant Banner
from $7.70
Bring a festive touch to your luau or outdoor gathering with this charming Lobster Bake Pennant Banner. Its vibrant white and blue colors create a lively atmosphere, while the durable design ensures it looks great throughout your event. Perfect for adding a splash of fun to any celebration.
Color: White/Blue
Size: 9" x 10' 9"
Includes 12 pennants per banner
Perfect for outdoor events and luaus
Sold by the package (1 banner) or by the case (12 banners).
Beistle
Shark Theme Party Photo Prop
from $9.80
Under The Sea parties need one big photo moment, and a shark tends to be it. This one is multicolor, assembles quickly, and is durable enough to pull double duty in party games once the photo line dies down.
Size: 3' 1" x 25"
Sold by the package (1 prop) or by the case (6 props)
About Under the Sea Party Theme
Dive into an enchanting underwater world with our captivating collection of under the sea-themed party decorations! Whether you're hosting a birthday bash or an ocean-inspired celebration, our assortment captures the magic of the deep blue sea. From shimmering sea creature cutouts to sparkling mermaid banners, our decorations transport your guests to a whimsical marine paradise. Add a splash of color with vibrant fish balloons, or create an immersive experience with coral reef centerpieces. Crafted with quality materials and intricate designs, our decorations ensure an unforgettable event filled with wonder and adventure. So, make a splash and let our under the sea-themed party decorations transform your gathering into an oceanic extravaganza!
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"I ordered a few things for my daughter’s birthday. 🎈 was happy with all of it! I will definitely order from here again. Thank you. 😊 Good quality and fast service! 😊👍"
★★★★★
"Great customer service I will say that if you order early in a day, you will get it the next day except for holidays and Sundays. They have tons of cool products for just about any occasion. They also have some nostalgic reproductions that can bring back old memories. Definitely recommend. 5 stars"
★★★★★
"In Love with Beistle products! I recently purchased Beistle die-cut products from Bulk Party Supply, and I'm beyond impressed! The shipping was incredibly fast, and the communication throughout the process was top-notch. The quality of the die-cuts is outstanding—the pumpkins were amazing, the cupids looked terrific, and the hearts were perfect. The packaging ensured everything arrived in pristine condition. Plus, the prices are a great deal! I'll definitely continue doing business with both Bulk Party Supply and Beistle Co."
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