Why do sea urchins have purple or violet spines?

The purple coloration of sea urchin spines comes from pigments called naphthoquinones, particularly spinochrome. These pigments serve multiple functions: they protect against UV radiation, have antioxidant properties, and may play a role in camouflage. Species like Paracentrotus lividus, common in the Mediterranean, display this striking violet-purple hue naturally.

How can this Photo be used?

Licensed for commercial use on Kataloop, this stock photo suits educational content on marine biology and echinoderms, infographics about ocean ecosystems, or editorial pieces on marine conservation. Example applications include science textbooks, nature magazines, environmental campaign websites, and social media content. The high-resolution file supports large-format print without quality loss.

What mood does this Photo convey?

The image conveys a calm, observational mood. The purple sea urchin rests motionless on the textured rocky bottom, surrounded by delicate algae fronds. Diffused underwater light and muted beige and olive tones in the background allow the animal's deep violet color to stand out clearly, giving the shot a focused, documentary character.

What equipment was used to capture this Photo?

This underwater shot was taken with the Sony DSC-RX100M7, a compact camera featuring a 1-inch sensor and the versatile 24-200mm lens at F2.8-4.5. The wide aperture helps in low-light underwater conditions, capturing the sea urchin's spine detail with clarity. The image resolves at 5472 x 3648 pixels, providing ample detail for cropping and large-format use.

What visual style or trend does this Photo represent?

Underwater images of marine organisms connect two current movements: growing awareness of ocean conservation and rising demand for authentic nature documentation content over staged studio photography. Echinoderms like sea urchins are also discussed in the context of ocean warming and biodiversity loss, increasing the relevance of such images for editorial, educational, and advocacy use.

Purple sea urchin on rocky seabed | Kataloop Stock Photo

Name: Purple sea urchin on rocky seabed
Brand: Kataloop
Price: 16 EUR
Availability: InStock

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Purple sea urchin on rocky seabed

Kataloop stock photo no.

9619353

5472

3648

31401187

SONY DSC-RX100M7

24-200mm F2.8-4.5

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Purple sea urchin on rocky seabed

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Why do sea urchins have purple or violet spines?

How can this photo be used?

What mood does this photo convey?

What equipment was used to capture this photo?

What visual style or trend does this photo represent?

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