The World’s Most Unusual Octopuses

Octopuses are renowned for their intelligence, but the diversity within this group of marine creatures is often overlooked. Recent research continues to reveal surprising behaviors and adaptations, challenging long-held beliefs about their solitary nature and habitat limitations. From deep-sea dwellers to land-walking species, here’s a look at some of the most remarkable and unusual octopuses found around the globe.

Dumbo Octopus

The Dumbo octopus (genus Grimpoteuthis) is perhaps one of the most recognizable unusual octopuses, named for its resemblance to Disney’s Dumbo due to the prominent ear-like fins extending from its mantle. These octopuses inhabit the bathyal and abyssal zones, at depths of up to 6,000 meters (nearly 20,000 feet), and possess soft bodies adapted to withstand the immense pressure. They are found in the Atlantic, Pacific, and Indian Oceans. Females exhibit a unique reproductive strategy, maintaining eggs at various stages of maturity, allowing for controlled fertilization when conditions are optimal. Dumbo octopuses swallow prey whole and typically live for 3 to 5 years.

Abdopus Octopus: The Land Walker

Found in the intertidal zones along the Northern Australian coastline, the Abdopus octopus stands out for its ability to move across land. Unlike most octopuses confined to rockpools at low tide, the Abdopus uses tiny suckers on its arms to crawl between rockpools, hunting for fish and crustaceans. It is the only species specifically adapted for terrestrial locomotion.

Glass Octopus

The glass octopus (Vitreledonella richardi) is a rarely-seen species inhabiting the mesopelagic and bathypelagic ocean zones. Its translucent, almost colorless body gives it its common name, making it incredibly difficult to spot in its deep-sea environment.

Mimic Octopus

While many octopus species can change color, the mimic octopus (Thaumoctopus mimicus) takes camouflage to another level. It can contort its body to imitate the appearance and behavior of multiple animals, including flatfish, lionfish, and sea snakes. This behavior is believed to be a defense mechanism, allowing it to avoid predators.

Larger Pacific Striped Octopus

The larger Pacific striped octopus employs a unique hunting technique: it taps its prey on the shoulder. This startling tactic forces the prey directly into its waiting tentacles, even when targeting shrimp with sensitive antennae.

Argonauts: Shell-Building Octopuses

Argonauts are unique among octopuses for creating an egg case that resembles a shell. Females construct this shell from calcium carbonate, beginning at just 12 days old. The shell serves as a brooding chamber for their young and also acts as a lifejacket, keeping them afloat near the ocean’s surface. Male argonauts have an unusual reproductive method, detaching a sperm packet from under their eye and transferring it to the female.

Social Octopuses: Octopolis and Octlantis

Traditionally considered solitary creatures, gloomy octopuses (Octopus tetricus) have been observed living in communal settings. Researchers discovered two such sites off the coast of Jervis Bay, Australia, dubbed Octopolis and Octlantis, challenging the notion of octopuses as exclusively solitary animals.

Pearl Octopus and the Octopus Garden

Thousands of female pearl octopuses (Muusoctopus robustus) gather off the coast of Monterey, California, in response to chilly water temperatures, forming what has been called the Octopus Garden.