Appearance
Starfish, sea stars or Asteroidea
(their scientific name) are usually star shaped echinoderms. The starfish that
I saw were murky green due to their surroundings. It took me forever to
actually see them. They were camouflaged perfectly!
Try to spot it in the first
picture:
(Clue: look in the middle, slightly towards the bottom half of the page.)
Their appearance really depends
on the species. Some have neon colours as a threat, so predators won´t try and
eat them! They'll leave them alone, because they'll think the starfish is
poisonous. Here is a close-up of the starfish in the picture above:
Most starfish
will eat anything that is as slow as it is, such as: clams, oysters, sand
dollars and mussels. They will also eat injured fish and snails when they can
find them. While some have found a liking for seaweed, even though it has lower
nutritional levels, others can be on the prowl for sponges, plankton and even
coral to snack on.
Although, what
I find interesting (and slightly weird!) is how they eat. Believe it or
not, they first break some of the muscles of their victim, and since their
mouth is facing down, they have to force their stomach through their
mouth and devour it whole. After that, they have to swallow their stomach again
and leave their ``delicious´´ meal to digest.
Fun
Facts!
- Starfish don`t actually have brains! Instead they use their nervous
systems.
- Even though their name clearly states that they are starfish, they
aren`t fish at all. Like I said at the start they are commonly star shaped
echinoderms, which means they are marine invertebrates.
- There are 2 000 types of starfish.
- They pump water around their body instead of blood! So the next
time you might harm a starfish in shark infested water, don`t freak!
- If you do happen to break a starfish`s limb off, don`t worry; the
can regrow body parts!
Their appearance really depends on the species. Some have neon colours as a threat, so predators won´t try and eat them! They'll leave them alone, because they'll think the starfish is poisonous. Here is a close-up of the starfish in the picture above:


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