Anatomy and Biology
What is the average leg span of a Japanese Spider Crab?
12 feet.
“Japanese Spider Crab.” Georgia Aquarium, 6 Oct. 2022, www.georgiaaquarium.org/animal/japanese-spider-crab/#:~:text=Japanese%20spider%20crabs%20get%20their,feet%20(3.7%20m)%20across.
In which ocean are the Japanese Spider Crabs found?
The Pacific Ocean by Japan.
“Japanese Spider Crab.” Georgia Aquarium, 6 Oct. 2022, www.georgiaaquarium.org/animal/japanese-spider-crab/#:~:text=Japanese%20spider%20crabs%20get%20their,feet%20(3.7%20m)%20across.
What is the primary diet of Japanese Spider Crabs?
Omnivorous, eating plants and animals.
Dewey, T.2006. "crabs.jpg" (On-line), Animal Diversity Web. at https://animaldiversity.org/collections/contributors/tanya_dewey/crabs/
What is the known lifespan of Japanese Spider Crabs?
Around 100 years.
“Japanese Spider Crab.” Smithsonian Ocean, 11 May 2023, ocean.si.edu/ocean-life/invertebrates/japanese-spider-crab#:~:text=The%20Japanese%20spider%20crab%20is,to%20be%20100%20years%20old.
True or False, Japanese Spider Crabs are considered endangered?
False
What feature gives the Japanese spider crab its name?
It is because their bodies are built like spiders with long legs.
“Japanese Spider Crab.” Georgia Aquarium, 6 Oct. 2022, www.georgiaaquarium.org/animal/japanese-spider-crab/#:~:text=Japanese%20spider%20crabs%20get%20their,feet%20(3.7%20m)%20across.
What type of coasts does the Japanese Spider Crab live in?
In the deep sea by Japan’s pacific coast.
Montereybayaquarium.Org, www.montereybayaquarium.org/animals/animals-a-to-z/japanese-spider-crab#:~:text=Where%20do%20spider%20crabs%20live,feet%20(50%20meters)%20deep.
Japanese Spider Crabs are known to eat which type of dead organism?
Carrion.
Dewey, T.2006. "crabs.jpg" (On-line), Animal Diversity Web. at https://animaldiversity.org/collections/contributors/tanya_dewey/crabs/
The male inserts a sperm packet as the male and female press on each other.
“Japanese Spider Crab, Facts and Photos.” Animals, www.nationalgeographic.com/animals/invertebrates/facts/japanese-spider-crab.
What happens when you come in contact with a Japanese Spider Crab?
Keep a safe distance to not disturb the crab. It is important to respect their space. If they feel threatened they will use their claws, but they are normally friendly towards humans.
Riebel, William. “Macrocheira Kaempferi.” Animal Diversity Web, 2011, animaldiversity.org/accounts/Macrocheira_kaempferi/.
How much can an adult Japanese spider crab weigh?
44 lbs
“Japanese Spider Crab.” Georgia Aquarium, 6 Oct. 2022, www.georgiaaquarium.org/animal/japanese-spider-crab/#:~:text=Japanese%20spider%20crabs%20get%20their,feet%20(3.7%20m)%20across.
What type of ocean floors do Japanese spider crabs live in?
How do Japanese spider Crabs use their long legs in their natural habitat?
To walk along the ocean floor and reach food.
Montereybayaquarium.Org, www.montereybayaquarium.org/animals/animals-a-to-z/japanese-spider-crab#:~:text=Where%20do%20spider%20crabs%20live,feet%20(50%20meters)%20deep.
How many eggs can a female Japanese Spider Crab lay at one time?
Over a million.
“Japanese Giant Spider Crab.” Aquarium La Rochelle, 15 Mar. 2021, www.aquarium-larochelle.com/en/species-encyclopedia/japanese-giant-spider-crab/#:~:text=In%20spring%2C%20after%20mating%2C%20the,shorter%20than%20its%20other%20legs.
What are the Social Behaviors of Japanese Spider Crabs?
They do not tend to be in social groups as they like to keep to themselves. During mating season the males will actively look for females. When they are encountered they become aggressive.
“Japanese Spider Crab, Facts and Photos.” Animals, www.nationalgeographic.com/animals/invertebrates/facts/japanese-spider-crab.
What is the scientific name of the Japanese Spider Crab?
Macrocheira kaempferi
During which season do Japanese Spider Crabs migrate to shallower waters for mating?
During the Spring time.
“Japanese Spider Crab, Facts and Photos.” Animals, www.nationalgeographic.com/animals/invertebrates/facts/japanese-spider-crab. Accessed 28 July 2024.
True or False, Japanese Spider Crabs are known to be aggressive hunters.
False.
How long does it take for Japanese Spider crab eggs to hatch?
About 10 days.
“Japanese Giant Spider Crab.” Aquarium La Rochelle, 15 Mar. 2021, www.aquarium-larochelle.com/en/species-encyclopedia/japanese-giant-spider-crab/#:~:text=In%20spring%2C%20after%20mating%2C%20the,shorter%20than%20its%20other%20legs.
In Japan, Japanese spider Crabs are referred to by what name?
Taka-ashi-gani.
“Taka-Ashi-Gani - the Japanese Spider Crab from Southern Japan - Kumamoto.” JapanTravel, en.japantravel.com/kumamoto/taka-ashi-gani-the-japanese-spider-crab-from-southern-japan/66355.
How many legs does a Japanese Spider Crab have, including claws?
Ten Legs (eight walk, two claws)
Japanese spider crabs are typically found in which depth range?
150-300 meters.
“Japanese Spider Crab, Facts and Photos.” Animals, www.nationalgeographic.com/animals/invertebrates/facts/japanese-spider-crab. Accessed 28 July 2024.
What unique behavior do Japanese Spider Crabs have to protect themselves from predators?
They decorate their shells with sponges and other items to camouflage.
Montereybayaquarium.Org, www.montereybayaquarium.org/animals/animals-a-to-z/japanese-spider-crab#:~:text=Where%20do%20spider%20crabs%20live,feet%20(50%20meters)%20deep.
At what age do Japanese Spider Crabs reach maturity?
10 years old.
Staff, SuchScience. “Japanese Spider Crab: Understanding the Giant of the Deep.” SuchScience, 24 Dec. 2023, suchscience.net/japanese-spider-crab/#:~:text=Japanese%20spider%20crabs%20reach%20sexual,releasing%20larvae%20into%20the%20ocean.
What is one traditional belief associated with Japanese Spider Crabs in Japanese folklore?
They are believed to bring good luck and prosperity.