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🧬 Biological Classification (Kingdom to Species)Haliotis discus

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Lepetellida

Family

Haliotidae

Genus

Haliotis

Species

Haliotis discus

Gastropoda🌿 Herbivore

Disk abalone

Haliotis discus (Disk abalone · Disk abalone)

🛡️ Conservation Status (IUCN Red List)EN (Endangered)

DDData Deficient

LCLeast Concern

NTNear Threatened

VUVulnerable

ENEndangered

CRCritically End.

EWExtinct in Wild

EXExtinct

Geological Era

Extant

Diet

Herbivore

Length · Height

20cm · No data

Mass · Top Speed

No data · No data

Habitat & Fossil Locality

Rocky coastal areas along all coasts of Korea, from near the low-tide line to about 10 m deep where brown algae are abundant

💡 Everyday Comparisons for Size, Mass & Speed

💡 Abalone porridge (Jeonbokjuk), made by simmering rice in broth boiled with fresh abalone, is prepared at a ratio of about 5 medium-sized abalones to 1 cup of rice (Encyclopedia of Korean Culture).
💡 Abalone is a seafood that has been eaten since ancient times, appearing even in prehistoric shell mounds (Encyclopedia of Korean Culture).
💡 Its shell length of 20 cm is almost the same as the short side of an A4 sheet of paper (21 cm).

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

#전복#Haliotis discus

📖 1. Overview

The disk abalone is a large gastropod living in seaweed forests on rocky seafloors and is distributed along all coasts of Korea. Its northern form is called 'Chamjeonbok' in Korean fisheries.

🦴 2. Anatomy & Morphology

The outer shell is brownish green with a strong blackish tint, wavy wrinkles, and radial ribs, while the inside has a strong pearly luster. A row of raised holes runs along the dorsal margin, with only the last 4–5 open as respiratory pores.

🔍 3. Ecology & Behavior

It spawns in autumn, and the eggs are fertilized in seawater and drift for 3–7 days before transitioning to a bottom-crawling life. Once on the bottom, juveniles eat tiny algae such as benthic diatoms and switch to large seaweeds as they grow.

🇰🇷 4. Connection to Korea

Seedlings for aquaculture have been produced at the National Fisheries Research and Development Agency hatcheries since the 1960s, and it is an ancient edible seafood found even in prehistoric shell mounds. It is assessed as Endangered (EN, 2022) on the IUCN Red List.