10 Insanely Simple Ocean Science Experiments — ASL Rochelle

  Are you searching for some straightforward ocean science experiments? Do not need a ton of supplies and spend tons of time and cash gathering provides for every experiment!  Get excited, as a result of we may very well be besties.


Listed below are the ten ocean science experiments we did, for reals with our unit examine.

Honesty time– I lurv science and I lurv science experiments. I do not love getting all of them collectively and shopping for probably the most random supplies that I’ll NEVER use once more, or must specialty order and delivery prices greater than the freaking product. And I am going to NEVER use it once more!! And we’re consuming beans for a month as a result of we have blown our faculty price range.

So I really like easy, straightforward, low-cost experiments that educate the idea, let the children be taught and discover and get excited in regards to the matter.


You will see all of the experiments we did, together with directions, explanations, and footage (after I remembered to take a number of pictures).

Like significantly, I forgot to take footage of the density experiment, so I’ll re-do it only for you when the children are sleeping. The sacrifices I make for these I really like (that is you, in case you have been questioning).

Salt Water Density

The start of the unit examine we began studying about and discussing the precise ocean.  How large it’s, what it is made up of, and extra. Salt water and its density appeared like a pure place to start out.

Supplies Wanted

  • Egg
  • Two clear jars/vases/bowls
  • Water
  • Salt
  • Small toys
  • Whisk

1. Fill one jar with plain water.

2. Fill one other with water after which add salt. We put in about 1/3c at first. I actually wished this to work, so I put in most likely nearer to 1/2c. I hate when science experiments do not go as promised. :-/  Stir like loopy.

Our water was lukewarm and Little Miss (8 y.o.) recommended we use scorching water to assist it combine higher.

3. We had a number of toys, little sea creatures, a medium sized rubber shark, a mega block, and a knight. We began with the knight. I requested them what they thought would occur after I put the knight within the plain water. Then I dropped him in. He sunk. The mega block floated. Then the remaining gadgets all sunk.

Then we added the egg. It additionally sank.

4. Then I began with the egg within the salt water. They have been so excited to see it floating! We added the remaining components and so they all sunk. Wah-wah-wah.

The youngsters recommended including extra salt, and that also did not assist.

This was after I tried to debate density. Issues with larger density sink and issues with decrease density float. The salt makes the water extra dense making it in order that extra gadgets are much less dense than the salt water, which means extra issues can now float.

Why is that this vital? The youngsters thought it could assist the fish swim and float higher. Candy Cheeks (4 y.o.) thought it could make it to allow them to float whereas they sleep. Cute!

Then we mentioned why we thought the egg floated when the opposite objects did not. The youngsters and I talked about maybe it was as a result of there was “liquidy stuff” contained in the egg and there is liquidy stuff inside fish too and perhaps that is why. Particularly because the toys haven’t got meals and blood inside them.


We veered astray a bit and I confirmed them how taking the Mega Block and a crumpled piece of paper I may put the block into the water and the paper would keep dry. They every had a flip attempting it themselves.

We talked about how in case you tilted it the water would go inside and the paper would get moist. Once they pushed the block into the water I had them go slowly so they might really feel the air strain pushing in opposition to their hand.

Within the video, Ocean, it briefly talked about the previous strategies of exploring the ocean. At one level, explorers can be lowered down in a wood field that had no backside to it. This was how they have been capable of keep down there for a short while with out the whole field being enclosed.


Captain (9 y.o.) identified water displacement and brainstormed why he thought this was taking place.


I cherished that regardless of the lackluster outcomes of this experiment (solely the egg floated after I wished extra to drift), so I suppose it wasn’t a flop, actually, we have been capable of get our brains working and fascinated by all types of issues associated to what we have been doing. To me, that is the essence of science. Curiosity, considering, and exploring.

Layers of the Ocean


  • Mason jar
  • Water
  • Corn syrup
  • Rubbing alcohol
  • Dish cleaning soap (blue)
  • Vegetable oil
  • Meals coloring (black, blue, inexperienced, purple)
  • Funnel
  • Spoon
  • 5 Small bowls
  • Measuring cup
  • Baster

1. Measure out 3/4c of every liquid. Pour into particular person small bowls.

2. Add meals coloring to every bowl and blend:

  • Black meals coloring to the corn syrup.
  • Blue to the dish cleaning soap.
  • Blue & inexperienced to the water (hold it lighter than the dish cleaning soap).
  • Blue to the oil.
  • Gentle mild blue to the rubbing alcohol.


3. Add the components slowly and fastidiously within the following order:

Corn syrup [wc_fa icon=”arrow-circle-o-right” margin_left=”” margin_right=””][/wc_fa] dish cleaning soap [wc_fa icon=”arrow-circle-o-right” margin_left=”” margin_right=””][/wc_fa] water [wc_fa icon=”arrow-circle-o-right” margin_left=”” margin_right=””][/wc_fa]  oil [wc_fa icon=”arrow-circle-o-right” margin_left=”” margin_right=””][/wc_fa]  rubbing alcohol

4. Add labels to every layer. Performed!

Daylight Zone – rubbing alcohol

Twilight Zone – oil

Midnight Zone – water

Abyss Zone – cleaning soap

Trench Zone – corn syrup

Focus on the density of every liquid (relate it again to salt water density experiment). Ask: would salt water be on the identical degree on this jar as plain water?



I am not going to lie, I received fairly ticked at this experiment. The dish cleaning soap received too darkish. Grr. We put 2 drops of crimson! 2 drops! We have been attempting to make it purple. As a substitute, it turned crimson on prime and black in every single place else. Tip: if in case you have blue dish cleaning soap, DON’T dye it in any respect.

Then the water. Oh the water. It simply blended in with the cleaning soap. The vegetable oil was separated properly, although it did bubble up. Then the rubbing alcohol kinda blended in, however made swirls as properly.

I let it settle and am hoping to see some separation within the morning. However actually, I am simply ticked I wasted 3/4c of dish cleaning soap.

Nicely, the children did take pleasure in it, although admittedly, they have been unhappy that it did not look all superior and separate. I adopted the directions from Steve Spangler science on how one can do the liquid density experiment, however apparently I haven’t got the right talent set.


I could do that paper and water jar model as an alternative. Relies on our time and power degree.


We then learn the e book Down, Down, Down: A Journey to the Bottom of the Sea. It exhibits which marine animals stay wherein ocean zone with stunning illustrations.

We used our plastic sea animals together with the e book to find out which zone they’re in and made a chart to match.


Shark Buoyancy


  • Bathroom paper roll
  • Marker
  • 3 pennies
  • Balloon
  • Vegetable oil
  • Bowl
  • Water
  • Tape
  1. Draw a shark on the bathroom paper roll (or reduce out a shark on paper and tape it on).
  2. Tape 3 pennies, equally spaced, on the underside of the bathroom paper roll.
  3. Fill the bowl with water.
  4. Ask: what is going on to occur to the shark? Drop the shark within the water and watch him sink. Focus on.
  5. Fill a balloon with vegetable oil, tie closed.
  6. Place the balloon inside the bathroom paper roll, evenly.
  7. Observe: it is a lot heavier now! Ask: what is going on to occur to the shark? Place the shark within the bowl of water and watch him float. Focus on!



The oil within the shark makes him buoyant.

Software and rationalization:

ASK: What’s holding us to the earth? (gravity). What’s gravity?

There may be gravity on land AND within the ocean. All of the animals within the ocean are being pulled down, similar to you’re. Gravity holds us to the ground, and all our homes, automobiles, and toys, too. It additionally holds the ocean and the animals within the ocean down. However they don’t seem to be on the underside of the ocean flooring such as you’re standing on the ground!

What are they doing? They’re floating.

How is that this doable? Buoyancy!

ASK: What on the planet is buoyancy?

Gravity pulls us down and buoyancy pushes us up! So the fish have made it to allow them to stability, or float. Lots of them have a bladder, type of like a ball, inside their our bodies that’s stuffed with gasoline. Consider a balloon when it is stuffed with air. The balloon is that bladder and the air within the balloon is the gasoline inside it.

Sharks haven’t got a bladder stuffed with gasoline. So what helps them float? Their our bodies don’t have ANY bones, as an alternative, they’ve cartilage. This cartilage is much less dense. Keep in mind, once we noticed how much less dense gadgets floated simpler within the water? Your ears and tip of your nostril is made out of cartilage, too! Sharks even have a really giant liver, and fins that assist them steer and keep afloat.

Their our bodies are nonetheless fairly heavy, in fact, heavier and extra dense than water. Their fins assist them to maneuver ahead on a regular basis. They by no means cease transferring!

Their liver is far bigger than ours. It is stuffed with oil, like what we simply utilized in our experiment. It’s much like the bladder within the fish we simply talked about. It offers the sharks impartial buoyancy. That implies that it isn’t getting pushed up and it isn’t sinking down, however staying on the similar degree.

All of this stuff mix to assist sharks keep afloat and never sink to the underside of the ocean flooring! Fairly cool, huh!?

The youngsters actually cherished this one. Their favourite half? Wiggling their ears with surprise as they realized that sharks have been manufactured from the cartilage.

How Whales Keep Heat


  • Crisco
  • 2 Ziplock baggies (sandwich or quart measurement)
  • Rubber band (sufficiently big to suit round hand)
  • Bowl
  • Water
  • Ice
  1. Fill bowl with water and add a number of ice. You need it chilly!
  2. Scoop a bunch of crisco into the primary ziplock bag.
  3. Place the 2nd bag inside the primary.
  4. Place your hand inside and safe each baggage onto your hand with a rubber band.
  5. Squish the crisco round your fingers and hand. Use your free hand to do assist. Don’t fret, your hand will keep grease free!
  6. Place your free hand into the ice water. Yikes!
  7. Now, place your crisco hand into the water. It is not freezing!

The fats retains the whales heat!


After I labored at a wilderness remedy program, we lived and hiked in snowy mountains. We would hike and sleep in near-blizzards. We solely had a tarp, sleeping pad, and sleeping bag to maintain us heat (in addition to our garments). No tents! We ate bacon at each meal. We added butter to our scorching chocolate and something we have been making. We ate as a lot fats as we may every single day to assist hold us heat.

I nonetheless was freezing chilly, so I am undecided how a lot it helped, however I am alive so it should have helped some!

They cherished this experiment! They have been shocked that their hand did not get chilly in any respect! It was a fairly cool feeling.


Possibly I am going to slather myself in crisco after I head to the chilly swimming pools this summer time? Get a depraved sunburn on the similar time. Win-win, proper?

I am kidding, proper?

Tide Pool


  • Roasting pan
  • Rocks
  • Sand (non-obligatory)
  • Plastic sea animals
  • Water (in fact)
  • Clay/Play doh (non-obligatory)

Create a tide pool along with your rocks. Take a look at footage of actual tide swimming pools to see what they seem like. Layer and construct your rocks. Add sand, if in case you have it and wish to.

You may also use play doh or clay to construct up your tide pool.

Add in plastic animals in numerous areas of your tide pool. Attempt to add people who would truly be in your tide pool and pass over people who aren’t.

Fill with water because the excessive tide is available in… after which empty because the low tide goes out. Then fill once more and play!!

We watched a number of movies on tide swimming pools. [insert links]


Water/Shoreline Erosion


  • 9×13
  • Sand
  • Water
  • Water bottle
  1. Place sand on one facet of the pan. Make it a steep slope
  2. Pour water into the opposite facet, till it is midway up your sand slope.
  3. Place your water bottle on the tip with the water. Push the bottle all the way down to create small waves. Do that, constantly and evenly for 1 entire minute. Write down what you observe.
  4. Push once more along with your water bottle for an additional minute. You could make your waves larger, or hold them the identical measurement. Make observations.


Ocean Bottle


  • Empty ketchup bottle (or different narrow-necked bottle with lid)
  • Corn syrup
  • Blue meals coloring
  • Vegetable oil
  • Lengthy spoon

Fill the bottle 1/4 of the best way with corn syrup.

Add a number of drops of blue meals coloring and blend with spoon deal with.

Slowly pour in vegetable oil till the bottle is midway full.

Put cap on. Make certain it is actual tight.

Flip the bottle on its facet, tilt it slowly so the capped finish is down at a slight angle. The corn syrup will crest within the bottle’s neck.

Cornmeal Currents


  • Mixing bowl
  • Water
  • Cornmeal (a pinch)

Fill the blending bowl with water, nearly to the highest.

Sprinkle the cornmeal into the bowl.

Blow steadily throughout the water floor (not into the bowl). Make certain it isn’t too light or too forceful (you may experiment with wind depth later).

The cornmeal can be swirled round by the currents simply as within the ocean. The northern hemisphere is clockwise and the souther, counter clockwise.

Deep-Water Currents


  • 9×13 pan
  • Water
  • Ice pack (or baggie of ice)
  • Meals Coloring
  1. Fill the 9×13 with an inch of water. Make certain the water is room-temperature (or barely hotter).
  2. Set the ice pack (or baggie) in opposition to the sting of 1 facet of the pan (contained in the water).
  3. Place 1 drop of meals coloring proper in entrance of the ice pack and 1 drop on the other facet of the pan.
  4. Observe and talk about.

The drop close to the ice pack will transfer ahead  as a result of the chilly water is pushing the nice and cozy water away. The drop on the opposite facet stays there as a result of the chilly water retains it from transferring.


Penguin Camo


  • Mason jar
  • Water
  • Craft foam, black & white
  • Glue stick
  • Scissors
  • Black paper
  1. Minimize a 2″ sq. out of the black and white craft foam.
  2. Glue them collectively and reduce out a penguin form.
  3. Fill the mason jar midway with water and place the penguin, black facet down on prime of the water. Maintain the jar below a lightweight supply (lamp, lightbulb, flashlight) and have a look at the penguin from the underside of the jar. It must be straightforward to see.
  4. Now, flip the penguin over, white facet down. Now look by means of the underside of the jar once more. That is the best way penguins swim! It is a lot tougher to see now as a result of the sunshine and the white mix collectively, making it tougher for predators to see from beneath.
  5. This time, place the jar on prime of the black paper. The black paper represents the darkness of the ocean. Have a look from above the jar to see how the black facet of the penguin helps mix into the water from this angle!


That wraps up all our ocean science experiments! We had so many nice conversations with every experiment and it is all the time a treasure to listen to them discuss and relate different issues to the brand new issues they’ve discovered.

As we have studied the ocean these have actually added a terrific depth to their understanding and greedy of every idea. I extremely advocate doing as many of those as you may.

For those who’re on the hunt for much more experiments (easy ones) with accompanying explanations I extremely extremely advocate the e book Awesome Ocean Science! There are numerous experiments and actions for a lot of features of the ocean. It covers all of the subjects, not simply the water portion. I discovered fairly a bit simply thumbing by means of the e book! Critically, go check it out. You will thank me later. 😉


Let me know which one your kiddos cherished probably the most! Do you have got every other enjoyable ocean experiments for us to strive?


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