13.09.2020 Animal of the week: Marine Iguanas

Hello everyone,

Today's animal of the week's post is about marine iguanas.

Habitat

Marine iguanas live on the Galapagos islands, which are situated on the equator, just off the east of South America. They don't live any where else in the world. Almost every Galapagos island has a different species of iguana.

Diet

Marine iguanas eat algae. They have to dive into the sea to do this. They have become excellent swimmers. They can dive down to depths of 20 metres. Marine iguanas can hold their breath for a very long time, more than 15 minutes.

Marine iguanas have evolved to match their surroundings. Being cold-blooded means that they get very cold when they go swimming for algae. They have black scales, so that they can absorb as much warmth from the sun as possible.

Threats

Unfortunately marine iguanas have quite a few threats.

1. El Niño

El Niño is a kind of storm. It happens every four to seven years. El Niño destroys the green algae, so the marine iguanas try to eat brown algae, which they can't digest. Hundreds of marine iguanas die from starvation.

2. Birds of prey

Birds of prey pick off the young and the weak marine iguanas. However, this doesn't effect the population much.

3. Humans

As with most animals, we are the one of the biggest threats to the marine iguana population. Humans now visit the Galapagos Islands just for a holiday. Most people who go there don't realise that they are destroying an amazing ecosystem just by being there. At least, I hope they don't. If they did know and continued to go there, they would be knowingly destroying the environment.

Cats, dogs, rats and pigs all have two things in common; 1, they were all introduced to the Galapagos islands by humans and 2, they all prey on marine iguanas.

Marine iguanas are also effected by rising sea levels and air temperature. These affect their breading sites and habits, and make it harder to control their body temperature. And rising sea levels and air temperature are both caused by climate change and climate change is caused by humans.

If you want to learn more about these amazing creatures, I would suggest watching 'Galapagos with David Attenborough'.

Thank you! I hope you enjoyed reading this.

Sources:
https://www.nationalgeographic.com/animals/reptiles/facts/marine-iguana
https://oceana.org/marine-life/marine-iguana/

Image: Marine iguana, owned by Peter Wilton (on flickr.com), is licensed under CC BY 2.0.

Comments

HB14/09/2020, 15:34
It’s great that you are featuring such fantastic creatures- really excellent.
I love the marine iguanas and I know a young man whose name begins with S who loves these as we do.
It’s so important you are highlighting these and other amazing creatures and that we must all reduce our carbon footprint radically to preserve these from just being museum pieces.
RB
ReplyDelete
Replies

Add comment

December Top Tips | 10 ways to re-purpose a plastic bottle

Welcome to December! We thought it would be cool to find 10 ways you can use a plastic bottle even after you have refilled it gazillion times, so you don't waste all the plastic . Because, even if you try to avoid plastic bottles at all costs, you will inevitably end up using hundreds of them throughout your life. The impact on the environment is undisputed, from the land animals to the creatures of our seas, plastic bottles can have a detrimental impact. But we can reuse them in lots of fun ways, here are our ten favourites. Have a good December and a great new year, you'll hear from us! 1. Bird Feeder At one of our blog meet-ups, we actually made a bird feeder out of an old plastic bottle, so this is definitely one we can vouch for. It's super simple, as long as you have some good scissors to cut the bottle and a suitable place to hang it. Below is a photograph of ours for some inspiration, and there are plenty of resources online to ...

The environmental impact of the paper industry - is paper really the solution?

Hello everyone, First of all: Merry Christmas or Hannukah! I hope you are all enjoying your holidays and this special time of year. Today we'll be looking into the paper industry because lots of people are arguing about whether paper bags are better than plastic ones. We looked into it for you, enjoy! Acid rain In the production of pulp and paper, nitrogen oxides (NO X ) and sulfur dioxide (SO 2 ) are produced. Both of these are contributors to acid rain, which is not quite as terrible as it sounds but still quite bad. Acid rain is rain, fog, snow or hail that is acidic. It's formed by NO X & SO 2 reacting with water and oxygen which will turn them into nitrous acid (HNO 2 ), nitric acid (HNO 3 ) & sulfuric acid (H 2 SO 4 ), meaning that instead of rain being formed from just water, it is instead also mixed with acid. While acid rain won't harm you, it can harm aquatic ecosystems and forests. When the rain falls on water, it w...

Ozone layer

Hi everyone, What even is ozone? And the ozone layer? Where does the hole in the ozone layer come from and what does it mean? Is it dangerous? What can be done? Often the ozone-talk can be complicated and confusing, keeping an overview is hard and understanding all the problems always difficult. Let us break it down a bit for you: What is the ozone layer? We'll start with the basics: The ozone layer is part of the stratosphere, which is the second layer of the Earth's atmosphere, between 10 and 50 km above the Earth's surface and made up of protective gases. One of these protective gases is ozone. There is not much ozone in the atmosphere, only 0.3 molecule of ozone per 1 million molecules of air. This is because ozone is chemically unstable and only forms when ultra violet radiation (UV light) hits oxygen and breaks the bonds between the atoms. It fact it is so unstable that even when it has formed, it breaks down again relatively quickly. This leads to ozone turning back ...

Animals 36-40 in our '50 incredible animals' series

Hi, As you probably noticed, we took a break from this series, mostly due to having just too much to do. But we're back now with the last three posts. 36. The Pinocchio frog The Pinocchio frog can be found in the Foja Mountains in Indonesia. They mainly eat insects, although little is known about them. They are named because the males have a spike on their noses. They were only discovered in 2008, and this was completely by accident! It remained unnamed scientifically until over ten years later when it was given the name " Litoria pinocchio " . There is very little information about them but Wikipedia states that "the male Pinocchio frog inflates its nose when calling, and the nose decreases in size when the frog is calm and quiet," which I think is hilarious and so interesting! 37. Snub-nosed monkey Especially noticeable due to their curious looks, the snub-nosed monkeys can be found in the forests of central China and northern...

Rachel Carson 1907-1964

Hi everybody, Today I am going to tell you about a really inspirational environmentalist. Her name is Rachel Carson. I hope her story inspires you to be more careful about pesticides. As a girl, Rachel adored writing stories about animals. She got a degree in zoology but had to go home to care for her ageing mother. She wrote a series of radio shows about fish for a living. Rachel's program, called 'Romance Under Waters', was a big hit. Her ways of writing were different to anyone else and no one had made that sound so interesting before. It proved that she was talented in not only science but also writing. She wrote two books called 'The Sea Around Us' and 'The Edge Of The Sea'. When Rachel moved to the countryside, she realized the impact of pesticides. At that time farmers sprayed chemicals on their fields a lot to protect them from animals that may want to eat them. Rachel worked out that they were killing pla...

Ecosia

We all need to do something to save our planet: it is no use just leaving it to Greta Thunberg! She is very inspirational, yes, but she can only do so much. She isn't superhuman! The climate crisis is up to us; up to you. We all have to get stuck in. Research, learn, discover and most importantly: never give up! The world's animals need us. The world's trees need us and a simple way to do this is to switch to Ecosia. Ecosia is a search engine but it plants trees while you search the web. Okay, it doesn't have as many websites as google so you may want to have google as a backup but it plants trees: this is your opportunity to make a simple change. Just google Ecosia and search to plant trees. Make a difference. Image: This image is owned by Binyamin Mellish on pexels.com .

10 Animals on the Edge of Extinction No. 10- The Javan Rhino

The Javan rhino is listed as the 1st animal on WWF’s list of the 10 world’s most endangered animals, and I for my part, had never heard of it! If you hadn’t either, we’re changing that now. A bit about the rhino’s lifestyle The Javan rhinos are now exclusively found on the island of Java in Indonesia, but were once found in vast regions of northeast india and Southeast Asia. They have a dark grey colour which looks almost black when wet, and their (often pink) skin folds look a bit like plated armor. Both males and females have lower incisors which resemble tusks that they use to fight. Males have one relatively short horn of about 25 cm (10 inches). Javan Rhinos live in tropical forests, marshy areas and in the thick bush. They are mainly browsers and eat over 100 plants species they find in the forest, weigh between 900 and 2300 kg (1984-5071 pounds) and are between 3 and 3.2 meters (10- 10.5 feet) long. How endangered are we talking? Javan rhinos are the most ...

Announcement: Factfile

This image is owned by a blog editor.

January 2021 Factfile - a bit of news from the past month and more!

Hi Everyone! Welcome to the first monthly fact file! We are going to share a news article from last month as well as animals and more! News You might have heard that the UK has authorised the use of a pesticide harmful to bees. It has been authorised for use on sugar beet with their excuse being to do with the virus yellows disease. But bees are in serious decline and this is not going to help. It is authorised for emergency use and only in specific conditions but, in our eyes, that doesn't make it okay. Farmers need bees to pollinate crops and now they are killing them with a horrible pesticide. What do you think? We would love your opinions below! For more information on bees in our honey bee post click here . We have also found an article about some Indonesian monkeys from the island of Bali who steal anything expensive, that tourists have because they know they will get a reward! They know which items have the most value and wi...

Pollination

Hello everyone, Today we're talking about pollination and its importance in the world's ecosystems. First a bit of basic plant biology. To reproduce most plants do have a differentiation into male and female, but not in the same way that we see in mammals. Both male and female reproductive organs can be found on the same plant, although not in the same place. Male gametes are produced in the stamens and are then found in pollen. On the other hand, female reproductive organs are called pistils and egg cells are found in the ovule (normally in the flower heads). Pollination describes the process of transporting the pollen to the egg cells, making it an essential part of the reproduction of plants. Nearly all seed plants worldwide require pollination to reproduce. Cone bearing trees also need pollination. Pollination is almost always assisted by other organisms such as insects, birds and mammals to transport the pollen. In some species wind ...

Green World

Search This Blog