crustaceans
7 questions tagged crustaceans — spanning every one of the seven Ws.
Why do crabs walk sideways?
Most crabs walk sideways because their legs bend outward at the joints, so moving to the side is the fastest and most efficient direction.
When was the Antarctic krill first scientifically described?
Antarctic krill was first described in 1906.
Which crab is the largest living arthropod?
The Japanese spider crab is the largest living arthropod, with a leg span that can reach about 3.7 meters.
Which reef fish has the fastest jaw strike?
The jawfish relative known as the mantis shrimp is often cited for the fastest strike in the animal kingdom, with its club accelerating at around 10,000 g.
Which crab has the longest leg span?
The Japanese spider crab has the longest leg span of any arthropod, reaching up to about 3.7 meters from claw to claw.
Which crab has the largest body mass?
The coconut crab is the largest land-living arthropod by mass, with adults reaching several kilograms and a leg span of more than 1 meter.
Which sea creature is the loudest underwater?
The pistol shrimp is one of the loudest animals relative to size, snapping a claw so fast that it creates a shockwave and a sound over 200 decibels at close range.