### animal | arthropod | decapod | crab:

Freshwater crab
* Many freshwater crabs are endemic to small areas.
* Most freshwater crabs migrate to water.
  * ' are crabs that live in fresh water, mostly in the tropics and subtropics. About 1300 species of freshwater crab have been described. In total, there are about 6700 species of crab. Freshwater crabs show different behaviour than other crabs. Other crabs release a large number of larvae into the environment. These larvae need to cope on their own. In contrast, freshwater crabs care for the young. Many freshwater crabs are endemic to small areas. This means there if there threat of the area of dissapearing, this also applies to the crab, which becomes threatened with extinction.
* can kill frogs but also feed on carrion, larvae and eggs.

Ghost crab
* Most ghost crabs inhabit subtropical areas.
* Most ghost crabs live in environments
  - harsh environments
  - shoreline environments
* Some ghost crabs eat mud
  - hibernate in burrows
* are predators which feed on sea turtle eggs and hatchlings among other things.
* inhabit areas
  - holes dug in the sand near the dunes, emerging at night to search for prey
* tend to feed at night and burrow close to the water.
* type of crab that burrows in sandy beaches on the east coast.

Green crab
* Most green crabs have claws.
* are a favorite bait of sport fishermen.
* can thrive in many coastal habitats and in wide temperature and salinity ranges.
* cause serious losses to shellfishermen by eating young clams, oysters, and scallops.
* eat molluscs, crustaceans, polychaetes and green algae.
* wander throughout the tidepool, always looking for a chance to grab a meal.

Horseshoe crab
* Most horseshoe crabs have blood
  - eyes
  - legs
  - shells
  - teeth
  - provide food
  - reach adulthood
  - spend most of the year in deep water
* Some horseshoe crabs have gizzards
* Some horseshoe crabs live in tidal zones
* Some horseshoe crabs look like crabs
  - prehistoric crabs
* Some horseshoe crabs utilize different habitats
* exhibit dimorphism
  - sexual dimorphism
* respond to lunar phases

Juvenile crab
* Most juvenile crabs inhabit mangrove areas
  - shelter areas
* Some juvenile crabs eat diatoms
  - take up residences
* inhabit areas

King crab
* Most king crabs compete for resources.
* Most king crabs have appendages
  - legs
  - life
  - shelf life
  - live in regions
* Most king crabs mate in shallow water
  - survive in presence
* Some king crabs eat diatoms.
* Some king crabs have abdominal flaps
  - carapaces
  - prefer habitats
  - shells
* spends two to three months in larval stages.

### animal | arthropod | decapod | crab:

Land crab
* Most land crabs occur in habitats
  - moist habitats
* Some land crabs eat fruit
  - go through metamorphosis
* are a common sight on Florida beaches
  - dietary staple on many tropical coasts and islands, but they are also pests
  - built on the same general plan as insects, but are much clumsier
  - common on all islands
  - terrestrial crabs who live the majority of their lives on land
* have a reduced gill number, and so conserve water
  - even more adaptations to prevent drying out
* live in sand or soil burrows up to several feet deep
  - on land and marine crabs live in the ocean
* need air.
* spend most of their lives on land, returning to the sea only to release their eggs.

### animal | arthropod | decapod | crab:

Male crab
* Most male crabs have claws.
* Most male crabs live in salinity water
* Most male crabs reach full size
* Most male crabs use claws
  - giant claws
* Some male crabs have abdominal flaps
* Some male crabs have small flaps
  - triangular flaps
* are graded by measuring from tip to tip, and checked for fullness.
* have a fleshy, bulb-like structure at the base of the moveable finger of the claws
* is tethered swimming on a string to catch a female.
* prefer lower salinity areas in the upper Bay and tributaries.
  - legs