Von Braunhut spotted the shrimp in a pet store in 1957, sold there as fish food. He noticed something else about them first, that the tiny crustaceans could be dried out completely and stored for years, then brought back to active life the moment water touched them again. That trick has a name, cryptobiosis, and it’s a survival strategy some brine shrimp use in salt lakes that dry up seasonally, leaving their eggs to wait out the drought in a dormant shell.
Von Braunhut launched the product as “Instant Life” in 1960, advertised through comic books rather than television or magazines aimed at adults. Sales were slow at first. He renamed the shrimp Sea-Monkeys in 1962, a name he said came from the way their long tails moved through the water, and hired comic artist Joe Orlando to draw the humanoid, smiling sea family that appeared on the packaging from then on.
The gap between that artwork and an actual half-inch, translucent brine shrimp was enormous, and the company knew it. Ads carried a line of fine print stating the caricatures weren’t meant to depict Artemia salina, the shrimp’s scientific name, though few kids stopped to read it before mailing in their dollar. The product sold anyway, in huge numbers, through decades of comic book pages alongside X-ray glasses and other novelty gimmicks of the era.
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Von Braunhut kept improving the shrimp itself. Working with marine biologist Anthony D’Agostino at a Montauk lab called New York Ocean Science, he developed a hardier, longer-lived hybrid strain in the early 1970s that the company named Artemia NYOS after the lab. Kits expanded well beyond the basic three-pouch hatching set, adding aquarium tanks with magnifying windows, feeding spoons, growth food and even Sea-Monkey racing games that let owners guide their shrimp by controlling water current.
Von Braunhut died in 2003, and the company passed to his wife, Yolanda Signorelli, who kept the brand going for another decade before selling the rights to Big Time Toys in the 2010s. Sea-Monkeys are still sold today, still made from dried eggs that hatch in plain water, and still marketed to kids who’ve never seen a comic book ad in their lives.
- Guaranteed to Come to Life: Watch real living Sea-Monkeys hatch and grow up to 0.78 in (2 cm) - a thrilling introduction to living science for kids ages six and up
- Three-Packet Kit Included: Comes with Water Purifier, Instant Live Eggs, and Growth Food pouches, plus a feeding spoon and illustrated instructions for easy setup
- Fun STEM Activity for Kids: This sea monkey kit sparks curiosity and teaches responsibility as children observe, feed, and care for their own living creatures
Just add water and you’ve got instant life! (1970)
Over 150 amazing Sea-Monkeys born ALIVE before YOUR eyes!
Shrimp that play games
From the Austin American-Statesman (Texas) November 1, 1976
One of the most unusual aquatic pets is the strain of artemia (brine shrimp) that Harold Braunhut has developed and marketed as Sea Monkeys.
A starter set can cost as little as a dollar. The little shrimp hatch instantly in 12 ounces of purified water, are born about the size of this comma, and within four weeks they grow to about 1/3-inch, with feathery little tails and swimmerets. Fully grown, they reach a maximum of two inches.
Sea Monkeys would be little more than a curiosity, except for a unique talent: They react to light and swim upstream against currents.
Braunhut has used these characteristics to create an instruction book of fascinating tricks to put the shrimp through, and his Transcience Corp. markets a series of racing games in which human players guide their Sea Monkeys by controlling the rate of the current flow.
A deluxe set to breed 100 shrimp includes the instruction book, good for several months, and ready-to-hatch dry eggs and retails for around $2. The racing games (speedway, ski trails, cycle race, fox hunt) are $10 each.
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A blue Sea Monkey aquarium tank with magnifying windows
Super Sea Monkeys: Fastest-growing Sea-Monkeys of all time!
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The spoon, aka “twin-level precision feeding instrument”
Sea Monkey growth food – vintage package
“The complete balanced diet for health and long life!”
Enter the wonderful world of amazing live Sea-Monkeys (1971)
Instant pets, only $1.25 – So eager to please, they can even be trained
Always clowning around, these frolicsome pets swim, stunt and play games with each other. Because they are so full of tricks, you’ll never tire of watching them.
And raising Sea-Monkeys is so easy, even a six-year-old can do so without help. They eat very little, and they keep their water so clean, they require only a minimum of care, though they LOVE attention.
Caricatures shown not intended to depict Artemia salina
Ripley’s Believe It or Not Sea Monkeys Sea Circus aquarium set
It’s fun to raise pet Sea-Monkeys! (1970)
The official “Instant Life” handbook — includes the Sea-Monkey (Artemia) “Growth Guarantee”
At least TWO Sea-Monkeys MUST grow to maturity or your supply will be replaced under this Guarantee. You must allow at least 12 weeks for this full growth to be reached. If you are unable to got satisfactory results, you may enter your claim.
The most important factor for success is PATIENCE. You must give your Sea-Monkeys a chance to grow. Consider the fact that they are not plastic toys, but real, LIVING creatures that must have time and proper care to be able to grow to adulthood.
Due to conditions beyond our control (although we have taken every precaution known to science), we do not guarantee how MANY fully-grown pets you can expect (thousands of our customers have reported getting many dozens, others just a few).
The amount you will obtain depends upon varying factors, both natural and artificial, such as: The quality of your regional water source, care, feeding, temperature control, bacterial control and many other conditions. To help you achieve success, we have developed many useful supplies and accessories listed in the Price list.
Under THIS Guarantee which is SEPARATE and DISTINCT from your Sea-Monkey Life Insurance Policy), our liability is limited to the replacement of Item No. 28 (value 50c) and Item No. 31 (value 50c), a total retail value of $1.00.
Both packages will be replaced ONLY if the purchaser is not able to grow TWO Sea-Monkeys to maturity. Under no circumstances does this guarantee cover the purchase price of your Sea-Monkeys. It is a replacement guarantee only.
This GROWTH Guarantee is Null and Void if you fail to comply with any of the following requirements for fulfillment of our pledge: 1. You must enclose 25c in coin to cover the labor cost of handling, processing and shipping your claim. 2. You must enclose a STAMPED, self-addressed envelope. 3. You must allow 3 to 4 weeks for delivery of your replacement supplies.
Own a bowlful of happiness… amazing live Sea-Monkeys (1972)
A thrilling live sea-circus in your home! – Only $1.00
Space Fidgit – the cosmic color-changing disc toy from the ’70s and ’80s
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“Sea-Monkeys are more fun than a barrel of people!”
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