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Interesting Crab
Facts
They are generally covered with a thick exoskeleton, and are armed
with a single pair of chelae (claws). Crabs are found in all of the
world's oceans; there are also many freshwater and terrestrial
crabs, particularly in tropical regions. Crabs vary in size from the
pea crab, only a few millimeters wide, to the Japanese spider crab,
with a leg span of up to 4 m.
Crabs are omnivores,
feeding primarily on algae, and taking any other food, including
mollusks, worms, other crustaceans, fungi, bacteria and detritus,
depending on their availability and the crab species. For many
crabs, a mixed diet of plant and animal matter results in the
fastest growth and greatest fitness.
Interesting
Lobster Facts
Lobsters are invertebrates, and have a tough protective
exoskeletons. Like most arthropods, lobsters must molt in order to
grow, leaving them vulnerable during this time.
Lobsters live on rocky, sandy, or muddy bottoms from the shoreline
to beyond the edge of the continental shelf. They generally live
alone in crevices or in burrows under rocks.
Although many studies suggested that lobsters are primarily
scavengers, feeding on mollusks and decaying animal matter, recent
studies have shown that they primarily feed on live fish, dig for
clams, sea urchins, and feed on algae and eel-grass. They
occasionally eat other lobsters as well. Lobsters grow throughout
their long lives, thus they can reach impressive sizes. According to
the Guinness World Records, the largest lobster was caught in Nova
Scotia, Canada and weighed 20.14 kg (44.4 lb). |
