EcoQuest: The Search for Cetus full walkthrough

EcoQuest: The Search for Cetus is one of many adventure games by Sierra. The game revolves around a child called Adam, who discovers his father has rescued a dolphin from the ocean.

The dolphin asks Adam to go on a journey under the ocean to save a whale named Cetus from an evil manta ray known as Flesh-Eater. Despite having a short runtime and being categorized with educational games, there’s a whale of a time to be had in EcoQuest for those who enjoy the classic point-and-click adventure experience.

We’ve got a full EcoQuest: The Search for Cetus walkthrough, along with an item list and points list, so you can get through the game with ease.

House

The EcoQuest: The Search for Cetus walkthrough begins in an office near the beach, where an oil-covered seagull has been found by Adam’s father. Look at the seagull. Get the bottle of detergent and the clean rag. Use the bottle of detergent on the clean rag, and then use the rag on the seagull. Get the water bottle from the right side of the gerbil’s cage. Use the water bottle in the cage. Get the garbage bag near the recycling bin at the bottom-left corner of the room.

Get the membership card and certificate from the chair on the left side of the office, and then get the torn envelope to recycle it. Get the empty soda can on the left side of the desk and throw it in the bin. Look at the books above the computer five times, and then look at the computer. Look at the board to view the diagram for the satellite buoy in this EcoQuest game. Talk to the rug in the middle of the room, and then look at the fish tank.

Use the fertilizer solution to clean the oil off the coral. Use the keypad on the door. Enter the code from the manual provided in the EcoQuest gameplay, and press E to open the door and enter the laboratory. Look at the propeller on the speedboat. Look at the board to read the instructions. Talk to the dolphin three times and get a mackerel from the bucket. When the dolphin stops swimming, throw the mackerel into the pool. Throw another mackerel into the pool, and then climb into the pool.

Hold onto the dolphin’s fin after it stops swimming. Climb out of the pool and get the frisbee on the counter. Throw the frisbee in the pool six times and catch it when it is thrown back. After the fourth time, the dolphin will say that his name is Delphineus. Pull the lever at the right side of the pool to open the hatch. Open the door to return to the laboratory and open the cupboard to get the scuba gear. Use the scuba gear on Adam to enter the ocean and progress to the next segment of this classic adventure game.

Ocean

Swim north twice to the cruise ship. Get the closed glass jar on the left side of the area, and recycle the two items on the left to create a path through the

garbage to continue the EcoQuest: The Search for Cetus walkthrough. Swim west. Use the oxygen tanks on Adam to dive into the ocean. Swim down twice. Swim east. Swim down through the gap in the seaweed at the bottom-left corner of the area to find Eluria. Before Delphineus swims off to the fish apartments, he will tell you to search for the Oracle.

Get the steel cage. Recycle the beachball, desk chair, pipe, radio, shopping cart, teddy bear, television, and the three-wheeler. Enter the temple on the right side of the area and get the conch shell on top of the pedestal. Exit the temple and look at the bronze statue. Give the conch shell to the servant, and get the trident from Poseidon. Return to the temple and look at the mosaic tile puzzle. Solve this point-and-click game puzzle by moving the tiles or clicking the Help button.

After solving the puzzle, look at the marble wall towards the right side of the temple and put the trident in the three eyes. The Oracle will appear to ask three questions as part of the EcoQuest gameplay. Click the man for the first answer, click the fish for the second answer, and click the heart for the third answer. After correctly answering the three questions, the Oracle will tell you to find ‘The Sign of Trust’. Exit the temple and enter the round building.

Talk to the room, and the senator will ask you to solve the column puzzle. Move the columns on the left side of the room so that they match the columns on the right side of the room. After solving the EcoQuest game puzzle, talk to Superflous the crab. Exit the temple and swim west to the garden. Recycle the fishing line, purse, pot, sheet, shoe, soda cans, spray bottle, tire, vegetable can, and wheel. Use the fertilizer solution on the whale statue and talk to Demeter the lobster.

Get the shell that drops from the statue and swim east. Swim to the top-left corner of the area to arrive at the fish apartments. Get the cotton cloth at the top of the steps. Recycle the candy box, cap, plate, shirt, shoe, sock,toaster, and toothpaste tube. Swim east and return to the round building from earlier in the EcoQuest: The Search for Cetus walkthrough. Use the cotton cloth on the oily shell, and give the shell to Superflous to receive the starfish badge. Exit the building and return to the fish apartments.

Fish apartments

Swim toward the apartments, and Gregarious the watchman, will appear. Give him the starfish badge. Push Narcissus the blowfish into the middle apartment and remove the plastic baggie to receive the sea urchins. Recycle the baggie and exit the apartment. Enter the middle-left apartment and talk to Epidermis, the angel fish. Use the sea urchins on the plants at the right side of the room, and Epidermis will give you a sharp shell, another important EcoQuest gameplay item.

Exit the apartment. Enter the middle-right apartment and talk to Hippocrates the swordfish. Use the sharp shell with the rings on Hippocrates’ nose, and he will give you the fish-bone tweezers. Get the six-pack rings on the floor and use the sharp shell on the rings. Exit the apartment. Enter the top-right apartment. Use the fish-bone tweezers on Erroneous the turtle twice, and he will give you four metal screws. Recycle the two red balloons on the floor.

Exit the apartment. Enter the bottom-middle apartment and talk to Gregarious toswim to the boat on the surface in this Sierra adventure game.

Ocean

To kick off this part of the EcoQuest: The Search for Cetus walkthrough, talk to the fisherman. Open the inventory and put the four screws in the cage. Use the steel cage on the propellers at the back of the boat to return to the fish apartments. Recycle the sushi sandwich and the wine bottle, and then get the water pump at the left side of the area. Enter the top-left apartment and recycle the bleach bottle on the table.

Be sure to put the water pump in the window at this point in the EcoQuest game to wake up Olympia the lionfish. Exit the apartment to receive the gold mask from the senator. Look at the marble wall on the right side of the temple and put the trident in the three eyes. Show the gold mask to the Oracle to receive the scroll. Exit the temple and swim south. Swim east to the big head and recycle the doll, plastic flamingo, teddy bear, and the underwear. Get the mirror and swim east twice.

There’s a lot more swimming to be done in EcoQuest by Sierra. Give the closed glass jar to the octopus and swim into the sponges at the bottom-left corner of the area. Swim out from the sponges and get the open glass jar. Swim east and get the fishing lure on the pillar. Use the trident on the toilet tank and get the float. Open the panel in the submarine and get the hacksaw. Swim west. Show the mirror to the octopus and get the cable. Swim west, and swim through the opening at the top of the area to enter the cave.

Open the pirate chest, and look at the pike. Use the pike on the pirate twice to reveal the key. Jump back into the water and try to get the key, a common item in classic adventure games. A red fish will swim off with it, so follow it east twice to the cave. Swim towards the fish, and then swim west three times to find that the fish has been eaten by the anemone. Use the fishing lure on the anemone and get the key. Swim west and use the open glass jar in the ear of the statue to get the flashlight fish. Swim east twice, and then swim up to find the drift net.

Use the sharp shell obtained earlier in the EcoQuest game to free Persephone the lobster. Swim down, and swim east three times. Use the flashlight fish to provide light in the cave. Look at the top-right corner of the cave and pull out fourteen of the rocks. Look at the rocks below the opening. Use the oily rag and the key in the lock to open the metal box. Get the protective clothing to swim through the opening to the dumping site. In the inventory, use the transmitter on the float, and then use the transmitter and float on the cable to make the satellite buoy.

Use the satellite buoy on the barrels, and then swim north to exit the cave. Use the trident on the door, and Flesh-Eater will chase Adam into a driftnet. Use the sharp shell to cut the driftnet and return to the coral reef. Swim east three times to return to the cave, and swim north twice through the opening to return to the ship. Use the trident on the cabin door and swim through to the other side of the ship. Swim up to find Cetus as we reach the latter parts of the EcoQuest: The Search for Cetus walkthrough.

Talk to Cetus, and he will fall asleep. Swim south and enter the whale’s mouth. Use the hacksaw to cut through the harpoon shaft. Exit the whale’s mouth and move close to Cetus. Pull the harpoon, and use the healing potion on the wound. Enter Flesh-Eater’s lair and use the sharp shell on the net to free Delphineus.Use the lionfish spine on Flesh-Eater to complete the EcoQuest game.

Item List

Here are all the items you will come across and use throughout your time with the EcoQuest game, organized in alphabetical order. 

Bottle of detergent 

Found near the seagull in the office. It is used with the clean rag to make the soapy rag.

Cable

After the octopus at the coral reef has been shown the mirror, the cable can be found outside the lair. The cable is used on the transmitter and float.

Certificate

Found in the envelope on the chair in the office. It is not used.

Clean Cotton Cloth

Found at the top of the steps outside the fish apartments in Eluria. It is used to clean the oily roomy shell.

Clean Rag

Found near the seagull in the office. It is used with the bottle of detergent to make the soapy rag.

Clean roomy shell

Made by using the clean cotton cloth on the oily roomy shell. It is given to Superflous in the round building at Eluria.

Closed glass jar

Found in the garbage near the cruise ship. It is given to the octopus in the lair at the coral reef.

Conch shell

Found on the pedestal in the temple at Eluria. It is given to the statue of the servant in the courtyard.

Empty Soda Can

Found at the left side of the desk in the office. It is thrown into the recycle bin.

Fertilizer solution

The first item you’ll come across during the EcoQuest gameplay with multiple uses. Adam’s father will give him the fertilizer solution after the seagull has been cleaned. It is used in the fish tank to clean the oil from the coral. It is also used on the whale statue in the garden at Eluria.

Fish-bone tweezers

Hippocrates the swordfish will give Adam the fish-bone tweezers EcoQuest game item after the six pack rings have been removed from his nose. They are used to remove the balloon from Erroneous the turtle’s throat.

Fishing lure

Found on the pillar near the submarine at the coral reef. After the fish with the key has been caught by the anemone, the fishing lure is used on the anemone to locate the key you need to progress the EcoQuest: The Search for Cetus walkthrough.

Flashlight fish

Found by using the open glass jar in the ear of the big head statue. It is used to provide light in the cave.

Float

Found in the toilet tank near the submarine at the coral reef. It is used on the transmitter to make the transmitter and float.

Four metal screws

Erroneous the turtle will give Adam the four metal screws after the balloon has been removed from his throat. They are attached to the steel cage.

Frisbee

Found on the counter in the laboratory. It is thrown to the dolphin in the pool.

Garbage bag

Found at the bottom-left corner of the office. It is used to collect garbage in the ocean.

Gold mask

Superflous will give Adam the gold mask in the round building after all the fish have left the fish apartments. It is given to the Oracle in the temple.

Hacksaw

Found in the panel on the submarine at the coral reef. It is used on the harpoon shaft in Cetus’ mouth.

Healing Potion

Demeter the lobster will give Adam the healing potion needed in the EcoQuest game after he uses the fertilizer solution on the whale statue in the garden at Eluria. It is used on the wound on Cetus caused by the harpoon.

Key

After the fish with the key has been caught by the anemone, the key is found by using the fishing lure on the anemone. After the lock of the metal box has been oiled with the oily cotton cloth, the next step in the EcoQuest: The Search for Cetus walkthrough is to use the key in the lock.

Lionfish spine

Olympia will give Adam the lionfish spine after the water pump has been used in the window of her apartment. It is used on Flesh-Eater.

Mackerel 

Found in the bucket on the left side of the counter in the laboratory. It is thrown to the dolphin in the pool.

Membership card

Found in the envelope on the chair in the office. It is not used.

Mirror

Found near the big head at the reef. It is shown to the octopus in the lair at the coral reef.

Oxygen tanks

Found in the cupboard in the laboratory. They are used on Adam before diving into the ocean.

Oily cotton cloth

Made by using the clean cotton cloth on the oily roomy shell. It is used on the lock of the metal box in the cave.

Oily roomy shell

Found after talking to Demeter in the garden at Eluria. It is cleaned with the clean cloth.

Open glass jar

Found by giving the closed glass jar to the octopus in the lair at the coral reef. It is used in the ear of the big statue to get the flashlight fish.

Satellite buoy

Made by combining the transmitter, float and cable in the inventory. It is used on the barrels in the dumping site.

Scroll

The Oracle in the temple at Eluria will give Adam the scroll after it has been shown the gold mask.

Scuba gear

Found in the cupboard in the laboratory. It is used on Adam before leaving the laboratory.

Sea urchins

Narcissus the blowfish will give Adam the sea urchins after he has been saved from the plastic baggie.

Sharp shell

Epidermis the angel fish will give Adam the sharp shell after the sea urchins have been used on the plants in his apartment. This is a useful item throughout the EcoQuest: The Search for Cetus gameplay. It is used to cut the six pack rings on the nose of Hippocrates the swordfish. It is used to cut the six pack rings in the inventory. It is used to free Peresephone the lobster from the drift net above the octopus lair. It is also used to cut the net near Flesh-Eater’s lair. It is used to cut Delphineus’ net in Flesh-Eater’s lair.

Soapy rag

Made by using the bottle of detergent on the clean rag. It is used to clean the oil from the seagull in the office.

Starfish badge

Superflous will give Adam the starfish badge when he is given the clean, roomy shell. It is given to Gregarious, the watchman outside the fish apartments.

Steel cage

Found in the courtyard at Eluria. It is put on the propellers at the back of the fisherman’s boat.

Transmitter

Found in the cupboard in the laboratory. It is used on the float to make the transmitter and float.

Transmitter and float

Made by combining the transmitter and the float in the inventory. It is used on the cable to make the satellite buoy.

Trident

After you’ve completed the part of the EcoQuest game where the conch shell has been given to the statue of the servant in the courtyard at Eluria, the trident can be found on the statue of Poseidon. It is put in the three eyes on the panel in the temple. It is used to open the toilet tank near the submarine at the coral reef. It is also used to open the ship’s cabin door near Flesh-Eater’s lair.

Water bottle

Found at the right of the side gerbil’s cage in the office. It is given to the gerbil.

Water pump

The final item on the list in this Sierra adventure game is the water pump. After the steel cage has been put over the propellers on the fisherman’s boat, the water pump is found outside the fish apartments. It is put in the window of Olympia the lionfish’s apartment.

Point List

Our Verdict

Very good

A game of very high quality. Although some aspects might have been executed better, we would recommend this game without hesitation.

EcoQuest is a rare example of well-done edutainment: it’s a pleasure to play and does a great job in creating awareness of environmental issues. Suitable not only for children but also for adventurers in need of a more relaxing gaming experience.