Grouper

Grouper

Groupers are one of the apex predators in the oceans. They are eaten by others like sharks but they are very important for the marine food chain.

General information

Diet: Small fish, Squid, Octopus and other animals like snails, crabs etc.

Predators: Sharks and Big fishes
Habitat: coral reefs

Special Power: Gulping other fish in fraction of a second
Colour: Colours differ from red, pink, orange but most groupers have dark colours like grey.
Length: 1-5 meters depending on the species


Information about the fish

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Characteristics of Living things



Characteristics of Living things

We live on a planet called earth which is the only planet which can keep life on it. There are billions of living things on earth from gigantic whales to small microbes. Lets see how to spot the difference between living and non living things.

Living things are things that are alive things that are alive must have these characteristics:

Movement: Yes a little bit

Growth: Yes

Reproduction: Yes

Needs food: Yes ( Chloroplasts a special sugar )

Respiration: Yes

Excretion: Yes ( releases air and water )

Sensitivity: Yes ( to light )

These are the 7 main characteristic that a living thing has, if it doesn't have one of these its not a living thing.

Movement

All living things can move on their own even plants - they just move very slowly.

Nutrition

Nutrition means energy, energy comes from proteins and vitamins. All living things need energy to do work. Even breathing takes a little bit of energy

Excretion

All living things throw wastes out of their bodies. The wastes are the things that doesn't have any nutrition left in it, it is commonly said as poo, or excretion means throwing wastes from our body

Respiration

Respiration is also called as breathing. Every living thing needs oxygen to breath

Sensitivity

Sensitivity means sense. When we touch a touch me not it closes its leaves because it senses our touch

Reproduction

Reproduction means making copies of its own kind it means giving birth to its own species.

a species would become extinct if not reproduced

Growth

Growth means becoming bigger. Think that if you are a child and you are 50 inches and when you grow up you will become 100 inches



Cuttlefish

Scientific name: Sepiida

Habitat: Near coral reefs

Diet: Small Fish, Crabs and lobsters

Predators: Sharks and big Fish

Rank in food chain: Consumer

Type of water it lives in: Saltwater

Size: 1-5 feet

Class: Mollusks

Relatives: Octopus and Squid

 

Fact: Cuttlefish are marine animals of the order Sepiida. They belong to the class Cephalopoda, which also includes squid, octopuses, and nautiluses. 'Cuttle' is a reference to their unique internal shell, the cuttlebone. Despite their name, cuttlefish are true molluscs.
Cuttlefish have large, W-shaped pupils, eight arms, and two tentacles furnished with denticulated suckers, with which they secure their prey. They generally range in size from 15 to 25 cm (5.9 to 9.8 in), with the largest species, Sepia apama, reaching 50 cm (20 in) in mantle length and over 10.5 kg (23 lb.) in weight.
Cuttlefish eat small molluscs, crabs, shrimp, fish, octopuses, worms, and other cuttlefish. Their predators include dolphins, sharks, fish, seals, seabirds, and other cuttlefish. Their life expectancy is about one to two years. Recent studies indicate cuttlefish are among the most intelligent invertebrates.Cuttlefish also have one of the largest brain-to-body size ratios of all invertebrates.^[2]
The 'cuttle' in 'cuttlefish' comes from the Old English word cudele, meaning 'cuttlefish', which may be cognate with the Old Norse koddi ('cushion') and the Middle Low German küdel ('pouch').The Greco-Roman world valued the cephalopod as a source of the unique brown pigment the creature releases from its siphon when it is alarmed. The word for it in both Greek and Latin, sepia, is now used to refer to a brown pigment in English.

Killer whale

Killer whale

Scientific name: Orcinus orca

Habitat: All oceans

Diet: Sharks, Octopuses, Fishes (big - Small), Squid, Crabs, Seals, Sea lions, Penguins and Turtles

Predators: Humans

Rank in the food chain: Top predators

Type of water it lives in: Saltwater

Biggest type of dolphin: Killer whale

Smallest type of dolphin: Maui's dolphin

Size: 10 mtrs

Did you know: Delphinus orca was the earliest name for the killer whale. It meant demon dolphin.

Class: Mammals

Icefish

 

Icefish

Scientific name: Notothenioidei

Habitat: Atlantic ocean

Diet: Krill and Plankton

Predators: Polar Bear, Dolphins and big Fishes

Rank in food chain: Consumers

Type of water it lives in: Saltwater

Size: 10 Inches-50 inches

Relatives: Mackerel Icefish and Mackerel
Class: Fish

Ocean animals-2 Octopus

Octopus

Scientific name: Octopoda

Habitat: All over the world



Diet: Crabs, Squids, Plankton and small Fish

Predators: Sharks, Whales, bigger Octopuses and bigger Fish

Special Abilities: Some octopuses squirt ink like the squid and all the octopuses can change color very fast

Rank in the food chain: Secondary consumers  

Type of water it lives in: saltwater

Biggest type of Octopus: Enteroctopus

Smallest type of octopus: Wolfi

Size: 1/2 feet-7mtrs

Did you know: Octopuses are thought to be the most intelligent animals without a back bone, or invertebrates. They can recognize various shapes and said to be have a good memory. They can even plan and open the lid of a jar.   



Relatives: Cuttlefish and squid
Class: Mollusks

An octopus is a sea animal with eight arms. There are more than 150 species, or types, of octopus. They belong to the group of animals called Mollusks, which also includes squid, clams, and oysters. Octopuses live in seas throughout the world.

An octopus has a soft, baglike body and large eyes. Its long, slender arms reach out in all directions. Each arm has two rows of cuplike suckers with great holding power.

Octopuses vary greatly in size. The smallest are only about 2 inches (5 centimeters) long. The largest may be 18 feet (5.5 meters) long and have a 30-foot (9-meter) arm span.

An octopus can change color quickly depending on its surroundings or its mood. It can be gray, brown, pink, blue, green, or even an angry red if it is suddenly frightened.

An octopus usually crawls along the ocean bottom on its arms searching for food. It eats mainly crabs and lobsters. Skillful hunters, octopuses also attack large prey such as sharks. If an octopus is in danger, it shoots a jet of water out of its body. This moves the octopus backward very quickly. An octopus also may release an inky fluid to darken the water and confuse an enemy.

A female octopus lays her eggs under rocks or in holes. She guards the eggs for four to eight weeks. Upon hatching, the young drift for several weeks before going to the ocean bottom

This video has been taken by me @ CineAqua, Paris, France. 

Ocean Animals: SQUID

 

SQUID

Scientific name : Teuthida

• Habitat: all over the world
• Diet: Shrimps, small fish, squid and plankton
• Predators: sharks, bigger squids, octopuses and big fishes
• Special abilities: squirting ink on predators
• Rank in the food chain: secondary consumer
• Type of water it lives in: saltwater
• Biggest type: colossal squid
• Smallest type: Caribbean reef squid
• Size: 1cm-6mr
• Relatives: octopus and cuttlefish

 

Squid are mollusks that live in the ocean. Mollusks are a group of animals with soft bodies. Squid are closely related to octopuses, but they have 10 arms instead of eight. Squid can live either near the coast or deep in the ocean.

 

A squid has a long, tube-shaped body with a short head. A shell supports the body from the inside. Giant squid can be 60 feet (18 meters) long and weigh 1,000 pounds (454 kilograms). Some other squid are less than an inch (2.5 centimeters) long. A squid has large eyes, usually on the sides of its head. Two of a squid's 10 arms are longer than the others. Suckers on the long arms help the squid catch fish and shellfish to eat.

 

Squid can be fast swimmers, or they can just drift along. Whales, sea birds, and other animals eat squid. Squid often use their speed to escape enemies. They also can hide from enemies by changing color to blend in with rocks or seaweed. Like an octopus, a squid can spray a cloud of inky fluid into the water to confuse the enemy.

 

After mating, a female squid lays hundreds to thousands of eggs. The eggs are grouped together in jellylike strands. The female leaves the eggs alone to develop. Within several weeks they hatch into a small form of the adult.