Overview

Megamouth sharks are rare oceanic filter feeders with an outsized mouth and a quietly mysterious reputation. Even in a field guide, the right tone is restraint: very large head, unusual feeding mode, and very few direct observations. It has a very large soft-looking head, broad mouth, relatively slender body, and a profile unlike any fast predatory lamniform. Megamouth shark records are scattered across tropical and temperate oceans, but sightings remain rare and widely separated.

It is mostly an oceanic shark that uses deep water as well as near-surface layers, likely tracking vertically migrating prey.

Added from the World Register of Marine Species (WoRMS).

Why it matters: The megamouth was only recognized by science in the late twentieth century, making it one of the most recently discovered shark families.

Common nameMegamouth shark
Scientific nameMegachasma pelagios
FamilyMegachasmidae
OrderLamniformes
Max length7.1 m
Depth range0 to 0 meters
RegionFAO fishing area 34, FAO fishing area 41, FAO fishing area 57
DietData not available in this offline release.
HabitatMarine waters (habitat data not available locally).
Why it stands outFamily: Megachasmidae

What this shark is

It has a very large soft-looking head, broad mouth, relatively slender body, and a profile unlike any fast predatory lamniform.

Where it lives

Megamouth shark records are scattered across tropical and temperate oceans, but sightings remain rare and widely separated.

It is mostly an oceanic shark that uses deep water as well as near-surface layers, likely tracking vertically migrating prey.

How it differs from similar sharks

Family: Megachasmidae

Compare it against Porbeagle, Japanese mackerel shark, and bigeye ragged-tooth.

Why it is notable

Encounters with people are extremely uncommon and usually involve strandings, incidental catches, or unusual surface observations.

Species-level taxonomy was verified from Sharkipedia's current species list and taxonomy workbook. In this pass, the narrative fields are cautious family-level placeholders synthesized from broad shark references, chiefly the FAO Sharks of the World catalogue, because a stronger multi-source species-level synthesis was not assembled here without risking invented detail. Replace this with a direct species-level synthesis before publication in the app.

Related shark pages

These links are meant to help readers continue through related species, not force extra clicks.

Porbeagle reference photograph showing the torpedo-shaped body and pointed snout; not to scale.
Lamna nasus

Porbeagle

Common name: Atlantic mackerel shark

Shark species in Lamnidae.

3.5 m max
Crocodile shark specimen photograph showing the large eyes and narrow streamlined body; not to scale.
Pseudocarcharias kamoharai

bigeye ragged-tooth

Common name: Crocodile shark

Shark species in Pseudocarchariidae.

1.1 m max