what are the more things found in the sea like seep and how are they useful???
please help me out ....
Answers
These brown, spiral-shaped egg cases are quite distinctive. Female Port Jackson sharks wedge them into gaps between rocks, where they harden and can stay for up to a year before the baby shark hatches. Sometimes they are dislodged by storms and end up on the beach.
(Image courtesy of K Bunker @ Flickr, CC BY-NC 2.0)
Commonly known as ‘sausage blubbers’ or ‘jelly blubbers’, these clear, C-shaped jellies are actually masses of moon snail eggs. The adult moon snail is a small brown and fawn snail that hunts in intertidal areas for little bivalve creatures.
(Image courtesy of M Bossley, CC BY Attribution)
Abalone have one flattish shell with a row of holes along one side to help them breathe. Rough on the outside, they’re pearly and beautiful inside, and when they’re alive they clamp onto rocks using a muscular foot.
(Image courtesy of J Delsing, Wikimedia Commons)
Razorfish are a bivalve, meaning they have two shells instead of one. They can live for 15 years and grow up to half a metre long. They live in groups in sandy or muddy sediments, and true to their name, the edges of their shells can be very sharp if you step on them.
(Image courtesy of P Hall, CC BY Attribution)
Anemone cones are cone shells measuring up to about five centimetres long that are found all around the SA coast. They are predatory molluscs that use a miniature poison dart to paralyse and catch worms on the seafloor. The live snail could give a person a painful sting, but the empty shell is not dangerous.
(Image courtesy of S Johnson, CC BY Attribution)
Anyone who has had a pet budgie is probably familiar with cuttlefish bones, as they are traditionally given to caged birds to sharpen their beaks. Cuttlefish come from the same order as octopus and squid. They are soft-bodied creatures with eight arms and two long tentacles to catch food, and the white ‘bone’ is actually an internal shell that helps them float.
(Image courtesy of M Bossley, CC BY Attribution)
The paper nautilus looks like a shell, but it is actually the egg case of an argonaut octopus. Argonauts live in the open ocean and the female makes this delicate, white case to protect her eggs. Once she has laid her eggs in it, the female also takes shelter inside the case, which has an air pocket that keeps it buoyant.
(Image courtesy of Mgiganteus1, The English Language Wikipedia, CC BY-SA 3.0)
Sponges may look like plants, but they are actually simple animals with a skeleton made from a fibrous material called spongin. They come in many shapes and sizes, and extract food by pumping sea water through their pores.
(Image courtesy of J Baker, CC BY Attribution)
Sea urchins are spiky little creatures with sharp teeth for eating algae, and tiny feet to move around. They are usually found on reefs or seagrass, but if they are washed ashore, their spines are usually broken off along the way. The rounded shell that is left behind is known as a ‘test’.
(Image courtesy of J Baker, CC BY Attribution)
Also known as sand crabs, surf crabs are a greyish colour and grow to
about 10 cm across, with two red dots on their shells that look like
eyes. As they grow, they discard their old shells and grow new ones, so
empty shells often wash up on the beach.