Sea Turtle Senses

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Which country, region, or state are you joining us from?
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Key Vocabulary Terms

Review the key terms in order to assist with answering the quiz questions.

Hertz: the derived unit of frequency in the International System of Units (SI)

Imprint (in sea turtles): sea turtle hatchlings use the unique magnetic field that exists to recognize their natal beach when they return 25-30 years later.

Magnetite Crystals: an iron oxide mineral that is strongly attracted to magnetic fields.

Migrate: to move from one region or habitat to another according to the seasons.

Natal: relating to the place or time of an organisms birth or hatching.

Senses: the ability by which an animal or person perceives an external stimulus.

Tympanic Scale:

Visible Light: the portion of the electromagnetic spectrum that is visible to the human eye.

Wavelenght: the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.
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Do sea turtles have similar senses compared to humans?
YESNO
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Yes! Sea turtles have similar senses that humans do and one that we don’t have! (Image credit: Loggerhead Marinelife Center)
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What senses do sea turtles use to find their food?Select all that apply
Sight
Smell
Taste
Hear
Touch
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Sea turtles use their sense of sight and smell to find their food! Their primary sense is sight when foraging, but if they are in murky water they will relay on their sense of smell.
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What visible light are sea turtles less sensitive too?Select all the apply
Violet
Blue
Green
Yellow
Orange
Red
Near-Ultraviolet
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Sea turtles are less sensitive to red and orange visible light. These types of colors have longer wavelengths making it harder for sea turtles to see them. Sea turtles are adapted to see shorter wavelengths that consist of the colors violet, blue, green, and even near-ultraviolet!
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What is a sea turtles 'sixth sense'?
Lateral Lines
Magnetic Sense
Echolocation
Electroreceptors
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A sea turtles 'six sense' is a magnetic sense. With magnetite crystals in their brains, sea turtles can use the magnetic fields of the Earth to know exactly where they need to go. Its like a built in GPS and compass! (Image credit: Loggerhead Marinelife Center)
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What sense does a female sea turtle use when digging her nest?
Taste
Touch
Smell
SIght
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Female sea turtles use their sense of touch when digging her nest! Once they can not feel any more sand while digging their egg chamber, they will start to lay eggs.
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