Blue dragons

Blue dragons is a type of mollusk known as a nudibranch.

Blue dragons

About Blue dragons

  • The blue dragon (Glaucus atlanticus) is a type of mollusk known as a nudibranch.
  • They also are known as blue sea slugs, blue angels, and sea swallows. 
  • It rarely grows larger than three centimeters long.
  • An air bubble stored in its stomach keeps the blue dragon afloat.
  • Distribution: It can be found drifting on the surface of the Atlantic, Pacific and Indian oceans in temperate and tropical waters.
  • Diet:
    • They feed on venomous siphonophores such as the Portuguese man-o-war and bluebottle, which also occur in ocean surface waters.
    • The dragons appear immune to the nematocysts – stinging cells – of these jellyfish-like creatures.
    • They incorporate these cells into multiple finger-like structures protruding from their body which provides them with a potent form of protection from predators.
  • The slug isn’t venomous all on its own, however, it stores the stinging nematocysts created by the creatures on which it feeds.
  • Its sting can cause problems, especially to children and elderly.
  • One sting from this little creature can lead to nausea, pain, vomiting, acute allergic contact dermatitis, and post-inflammatory hyperpigmentation.
  • They are hermaphrodites, meaning they have both male and female reproductive organs. 

Q1) What is Mollusk?

It is any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body. Along with the insects and vertebrates, it is one of the most diverse groups in the animal kingdom, with nearly 100,000 described species. 

Source: Beachgoers, beware! Venomous blue dragons spotted near seashore in Besant Nagar

Latest UPSC Exam 2025 Updates

Last updated on June, 2025

UPSC Notification 2025 was released on 22nd January 2025.

UPSC Prelims Result 2025 is out now for the CSE held on 25 May 2025.

UPSC Prelims Question Paper 2025 and Unofficial Prelims Answer Key 2025  are available now.

UPSC Calendar 2026 is released on 15th May, 2025.

→ The UPSC Vacancy 2025 were released 1129, out of which 979 were for UPSC CSE and remaining 150 are for UPSC IFoS.

UPSC Mains 2025 will be conducted on 22nd August 2025.

UPSC Prelims 2026 will be conducted on 24th May, 2026 & UPSC Mains 2026 will be conducted on 21st August 2026.

→ The UPSC Selection Process is of 3 stages-Prelims, Mains and Interview.

UPSC Result 2024 is released with latest UPSC Marksheet 2024. Check Now!

UPSC Toppers List 2024 is released now. Shakti Dubey is UPSC AIR 1 2024 Topper.

→ Also check Best IAS Coaching in Delhi

Vajiram Editor
Vajiram Editor
UPSC GS Course 2026
UPSC GS Course 2026
₹1,75,000
Enroll Now
GS Foundation Course 2 Yrs
GS Foundation Course 2 Yrs
₹2,45,000
Enroll Now
UPSC Prelims Test Series
UPSC Prelims Test Series
₹6000
Enroll Now
UPSC Mains Test Series
UPSC Mains Test Series
₹16000
Enroll Now
UPSC Mentorship Program
UPSC Mentorship Program
₹85000
Enroll Now
Enquire Now