The correct sequence in an aquatic food chain is:
Last updated Jun 18, 2026
Correct Answer:
Option D —
Tiger shark → Spotted dolphin → Squid → Crab→ Sea urchins → Algae
Explanation:In this specific question, the arrows (→) are used to represent "eats" (the predator pointing to its prey) or the sequence is written from the highest trophic level (apex predator) down to the primary producer:
Tiger shark (Apex Predator) eats the dolphin.
Spotted dolphin (Tertiary Consumer) eats the squid.
Squid (Secondary Consumer) eats the crab.
Crab (Secondary/Primary Consumer) eats the sea urchin.
Sea urchins (Primary Consumer/Herbivore) eat the algae.
Monitor National Marine Sanctuary - NOAA
Algae (Primary Producer) forms the base of the aquatic food chain using sunlight.
When read from right to left (Algae ← Sea urchins ← Crab ← Squid ← Spotted dolphin ← Tiger shark), it perfectly outlines the natural flow of energy in a marine ecosystem.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
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