Life cycle of a crab for kids

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life cycle of a crab for kids

Crab Moon by Ruth Horowitz

Introduce young naturalists to the mysterious high tide of the horseshoe crabs.

One June night, under the full moon, Daniel’s mother wakes him up to see the extraordinary sight of horseshoe crabs spawning on the beach, just as they have every spring for an awesome 350 million years. But when Daniel returns in the morning, he finds only one lonely crab, marooned upside down in the sand. Can he possibly save it? Like a perfect day at the beach, CRAB MOON leaves an indelible memory of a special adventure between parent and child, and a quiet message about doing our part to preserve even earth’s oldest creatures.
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Published 10.05.2019

Life Cycle Video for Kids - Science Learning from

But most crab species are found in the shallower ocean waters where the crabs tend to inhabit rocky pools and coral reefs. The lifespan of a crab varies according to species.
Ruth Horowitz

Crab Facts & Worksheets

Blue crabs are one of the most distinctive species in the Chesapeake Bay. The survey operates during the winter, when blue crabs burrow into the mud and remain dormant until water temperatures rise. Partners of the Chesapeake Bay Program Forestry Workgroup explored the down-Bay environment of Smith Island to see the impact of their restoration efforts. The visitors hauled up their own crab pots, sorted oysters on the water and experienced life in the Smith Island communities of Tylerton, Ewell and Rhodes Point. Female blue crabs develop an external egg mass, or sponge, beneath their apron after mating.

A fiddler crab , also called a calling crab , is a land crab that lives in mud or sand flats near the beach. The reason this crab is called a fiddler crab is because it holds its large cheliped in front of its body and moves it back and forth as if it is playing a fiddle. The male fiddler crab has one huge cheliped and another smaller cheliped. Sometimes it's the right cheliped that's the big one and sometimes it's the left. If a male loses its large cheliped, the smaller one will grow large to replace it. This huge cheliped is so large that it is sometimes bigger than the whole crab. It is this cheliped they wave back and forth.

To understand the blue crab life cycle, we will follow a female blue crab from birth to reproduction. The blue crab starts her life as a larva, an early-life stage that looks completely different than her adult form. She will spend days going through seven larval stages called zoea. In each stage she is similar in appearance, but is slightly larger than in the last stage. Even this early in life, crabs have a hard outer shell exoskeleton. In order to grow and change stages, the larva must molt, which means shed or cast off its shell. During molting, the exoskeleton splits, and the soft-bodied larva backs out of the hard shell.


The Maryland blue crab is an olive green crustacean known for its bright blue legs and sweet tasting meat. This crab inhabits all areas of the Chesapeake Bay, frequenting the shallow waters and grass beds in summer while hibernating in deeper trenches for winter. The rather short life span means the blue crab moves quickly through its life cycle. Mating season occurs from May through October. Males, or jimmies, meet with females, called sooks, in the salty middle waters of the Chesapeake Bay. The male partner carries the female into a protected area while she prepares for her final molt, or the shedding of her hard external shell. The crabs mate after she molts, and the female captures the sperm for later fertilization of the eggs.

Are you teaching the life cycle of a plant for kids or an animal life cycle for kids? This is the article for you. All a caterpillar does is eat, so it is very important to collect the leaves that you found it eating for food. Make sure that you add a stick to your jar and that you keep a fresh supply of leaves until they have gone into their pupa stage. Leave a wet cotton ball in the jar. They need moisture in order to hatch. After your butterfly or moth has hatched , let it go.



  1. Joe N. says:

    Alliteration Hyperbole Metaphor Irony.

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