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Easily the largest of the Megarachnids, the Extengrab is a large mantis-like animal that lives in swamps. There are also two types, the winged and un-winged. The winged are designed to fly to new lakes and rivers and reproduce, un-winged are mainly used to fortify the population in existing lakes.

Basic Information

Anatomy & Morphology

They are easily 9 feet tall and can breath underwater for up to 4 hours. They have large arms, like those of a mantis, to grab prey. They have a tough exoskeleton, and small hard plates internally to act as supports.

Biological Traits

Small, but accurate eyes, a large pair of arms, and an exoskeleton.

Genetics and Reproduction

The males brutally fight over females, limbs often being lost. The winning male must also present the female with a gift for her to eat before mating, or she will eat him afterwards. She then lays hundreds of eggs on the underside of plant leaves in the water.

Growth Rate & Stages

The young hatch fully developed and tiny, but they are fully equipped to survive on their own. Like insects and other arachnids, they shed their skin to grow. Growing to adulthood takes a few years.

Ecology and Habitats

These creatures thrive in almost any body of water, from giant lakes, to creeks. Due to their long, thin legs, they can crouch low or stand tall to accommodate for the water level.

Dietary Needs and Habits

Every few days, they must eat. To hunt, they act as a log would, sitting near the edge. When a sizable prey item comes, they stand up, and grab the creature. They then begin to eat, while it's alive. These predators can clean a sucker to the bone in an hour or two.

Biological Cycle

During the winter months, when the water freezes, they stay under the ice and continue with life. They have an antifreeze in their blood that allows them to stay alive and well, even under ice. Their breathing slows down greatly also during this time.

Additional Information

Social Structure

If possible, they will eat each other outside of mating season.

Uses, Products & Exploitation

Usage as guard creatures is the best idea found, and it's not a good one.

Geographic Origin and Distribution

Nearly any water source on the Eastern or Southern continent.

Average Intelligence


Perception and Sensory Capabilities

They can hear, smell and see well. Usually pretending to be a log, they also need to learn to be extremely still.

Scientific Name
Bibe Cimex
Unsure of location, as they don't fossilize well.
Depends on location, ones in colder climates will live longer than their warmer cousins, but averages at around 4 years.
Conservation Status
They are not common but have a large range to spread their species to the farthest way possible.
Average Height
9-10 feet tall.
Average Weight
400 pounds is about the heaviest found.
Average Length
Around 6 feet long.
Average Physique
Skinny and branch-like. Similar to 'Slim' from A Bug's Life.
Body Tint, Colouring and Marking
Mostly brown, but can have traces of gold and green.

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