Home to one of Earth’s most extraordinary ecosystems

Do you know that the Red Sea is home to more than 1,200 species of fish? Many of them are found nowhere else on Earth. Its coral reefs can survive warmer temperatures than reefs in other parts of the world, which is why scientists often call them “super corals.” If you’ve ever swam above a Red Sea reef, then you know that it feels like watching a living picture. Bright orange anthias, elegant butterflyfish, and curious parrotfish all moving in harmony. This beauty is what makes Hurghada famous… and also what makes it fragile.

Main environmental challenges in Hurghada

1. Hurghada environmental guide about coral reefs damage

Corals are living organisms and are much more fragile than they appear. Even a small break in a coral branch can take years to heal. The biggest threats are:

• touching corals while snorkeling
• anchors dropping directly onto reefs
• sunscreen chemicals
• too many visitors in small areas

Professional guides explain the rules before every boat or snorkeling trip. They show how to enjoy the reefs safely. Even on your own, you should follow these rules. Touching or standing on coral can harm the reef and also break local law. Staying informed helps protect both nature and your tour.

2. Pollution on land and sea

Pollution is one of Hurghada’s biggest environmental challenges, both on land and in the water. Plastic waste, cigarette butts, food wrappers, and oil leaks from boats are common problems. Floating plastic bags and bottles often drift into the sea, sometimes mistaken for jellyfish by sea turtles or fish, which can swallow them by mistake. Much of this pollution comes from human activity. The big Hurghada’s problem is that there aren’t enough trash bins, which makes it easy for people to leave waste on the ground.

3. Over-tourism at popular spots

Hurghada’s stunning reefs attract thousands of visitors every day, especially around popular areas like Giftun Islands. While these sites are breathtaking, the heavy boat traffic, crowded snorkel spots, and careless fin kicks can put serious pressure on the delicate marine ecosystem. Coral can be easily broken, fish habitats disturbed, and the overall health of the reef compromised. For anyone reading this Hurghada environmental guide, it’s important to understand that responsible tourism makes a difference. Choosing eco-friendly tours and following guides’ instructions can help protect these underwater treasures for years to come.

4.  Beach erosion

Building too close to the shoreline disrupts the natural movement of sand and water, causing beaches to shrink and reshaping the coastline over time. In areas like El Gouna, rapid construction has already damaged nearly 50% of the nearby coral reefs, showing how development can directly affect marine ecosystems. It’s a reminder that sustainable planning is essential. Preserving natural beaches not only protects coral reefs and marine life but also ensures that future visitors can continue to enjoy Hurghada’s pristine coastline.

5. Desalination impact: Hurghada environmental guide

Hurghada relies on desalinated water to meet the needs of its growing population and resorts. However, the leftover salt brine discharged back into the Red Sea can increase local salinity, affecting nearby coral reefs and marine life if not carefully managed. This section of the Hurghada environmental guide shows why sustainable water practices are essential. Tourists can also make a difference by supporting eco-friendly hotels and operators who follow proper desalination procedures, helping to protect the delicate reef zones and ensuring that Hurghada’s underwater beauty remains for generations to enjoy.

Who is protecting Hurghada’s environment?

HEPCA works tirelessly to protect the Red Sea. They introduced: the mooring buoy system (to stop anchors damaging reefs), beach and desert cleanups, and educational programs. Many of the beautiful reefs tourists enjoy today are safer because of HEPCA’s long-term efforts. Many dive and snorkel operators now follow “reef-friendly rules”:

* no anchoring
* no feeding fish
* no touching corals
* giving short eco-briefings before every trip

Today’s fishermen in Hurghada know the sea like the back of their hand. They carefully avoid catching young fish and follow seasonal patterns to keep marine life healthy. On top of that, the government has created protected marine areas, including the famous Giftun Islands. These zones limit overcrowding and give coral reefs a safe space to recover and thrive. For visitors, this means you can enjoy snorkeling and diving in spots where nature is carefully preserved, helping to keep the Red Sea vibrant and full of life.

How tourists can help right now according to Hurghada environmental guide

Visitors have a bigger impact than they think. Here are easy ways to be a “reef hero”:

• Do NOT stand on or touch corals
• Use reef-safe sunscreen
• Choose eco-friendly boats and centers
• Avoid single-use plastics (bags, cups, straws)
• Don’t feed fish, it disrupts their natural behavior
• Take only pictures, leave only bubbles.

Even small actions make a difference.

The future of Hurghada’s nature

Hurghada’s beauty isn’t just a tourism attraction; it’s a treasure worth protecting. With the combined effort of conservation groups, responsible tourism, and growing awareness, the Red Sea still has a bright future. Our coral reefs, beaches, and marine life can continue to amaze visitors for decades to come… as long as we care for them today.

Why do fish have strong memory?

Memory is key to survival. It helps animals find food, avoid danger, and recognize familiar places or other creatures. Fish live in wide, open waters filled with predators. With weak memory, they wouldn’t last a day.
Think about it logically:
How could fish species that have existed for over 500 million years continue to thrive, migrate, and reproduce without a robust memory system?

Scientific experiments reveal fish memory power

Here are several fascinating examples that clearly show fish have a surprisingly strong memory. Scientists have discovered many ways in which fish remember, learn, and adapt — proving they’re much smarter than most people think.

Spatial Memory Experiment

In a well-known study, researchers trained fish to identify where food was placed inside a tank at specific times of the day. Even after a two-week break, the fish gathered at the same place and time expecting food, showing that their memory lasted for weeks — not seconds.

The lever-pressing experiment

Another experiment introduced a lever that released food only at certain times. The fish learned to press it only when feeding time arrived, showing their ability to associate time, action, and reward — a sign of advanced cognitive function.

Fish that learn from mistakes sure hasn’t weak memory

A 2017 study on Guppy fish found that these fish can improve their performance in maze tests through repeated training. After four days, they completed the maze much faster than on day one — evidence of learning through memory similar to mammals.

Complex behavior: tool use and deception

Some fish species have been observed using tools to obtain food. For example, wrasses, especially the orange-dotted Tuskfish, have been observed using rocks as tools. It was dropping rocks on sea urchins to break their shells. Others, like Sailor fish, display protective strategies by attaching their eggs to plant leaves, allowing them to move them quickly if the nest is attacked. These behaviors demonstrate that fish are not mindless creatures but intelligent beings capable of planning and adapting.

Counting and numerical recognition for sure aren’t sign of a weak memory

Researchers showed fish cards with different numbers of dots. In over 1,200 tests, the fish chose the correct card 91% of the time. This shows they can compare numbers and remember patterns — skills once believed to belong only to higher animals.

Do manta rays remember their routes?

Manta rays may travel more than 2,000 km across the ocean — and they don’t do it by chance. These gentle giants remember their migration routes, food spots, and cleaning stations year after year. Scientists believe manta rays use both memory and environmental cues to navigate. It’s like they carry an invisible map in their minds, guiding them safely through the vast blue world.

Memory in aquaculture applications

Scientists have applied fish memory to sustainable aquaculture. By training fish to respond to feeding sounds, farmers can later release them into the sea and recall them during harvest using the same sound cue. This clever method proves that fish don’t have a weak memory at all — in fact, they can remember and react after weeks or even months. It also helps reduce feeding costs and supports environmentally friendly farming, all thanks to the strong and reliable memory of fish.

Fish can recognize faces, so no weak memory!

Studies have shown that archerfish can remember and recognize human faces — even after seeing dozens of them. Or, other interesting real-life story with a diver who once removed a fishing hook from a shark’s mouth. After that, the same shark started visiting her regularly — and even brought other sharks that also had hooks stuck in their mouths, as if asking for help. This shows that fish can recognize people, remember positive experiences, and even communicate them to others.

The myth about weak fish memory is entirely false

Scientific research proves that fish can remember things for weeks or even months. They learn from experience and show surprising intelligence. So next time someone says, “He has a fish memory!” — you can confidently correct them. And when you go snorkeling with Hurghada Today, take a closer look. The fish you meet might remember you longer than you think.

References
Oxford University research on Guppy fish behavior (2017).

Spatial memory studies in Animal Cognition journal.

Australian Marine Science Centre studies on fish learning.

Respiration as a vital process

Oxygen keeps life alive. It fuels every cell, giving living things the power to move, grow, and stay alive. Humans get oxygen through their lungs, pulling it from the air with each breath. The lungs send it into the blood, which carries it to every part of the body. In return, carbon dioxide leaves as waste. But for creatures under the sea, things work differently. There’s no air to breathe, only water. Over millions of years, marine life developed amazing ways to take in the oxygen hidden within it.

How do fish breathe underwater?

Fish don’t have lungs like we do. Instead, they breathe through special organs called gills. These gills handle the vital job of swapping gases — taking in oxygen and letting out carbon dioxide. Each gill is made of thin, delicate filaments filled with tiny blood vessels. That’s what gives them their bright red color. Most fish have four pairs of gills, but some, like sharks, can have as many as seven. When a fish opens its mouth, water flows in and washes over the gills. The blood inside the filaments collects the oxygen dissolved in the water and releases carbon dioxide in return. Then, the used water slips out through the gill openings — just like water draining through a strainer.

The challenges of breathing underwater

Although fish appear well adapted, underwater respiration is actually a demanding process. Water contains only about 8 milligrams of oxygen per liter, while air contains nearly 210 milligrams per liter — over 25 times more. Furthermore, oxygen levels drop significantly in deeper waters, meaning fish must rely on highly efficient oxygen-extraction systems to survive in such conditions.

Dual breathing in certain species

Not all fish depend solely on gills. More than 450 fish species can breathe air directly using dual respiratory systems, which combine gills, lungs, or even skin surfaces.

Examples include:

• The Mudskipper: Native to Southeast Asia, it can live up to six consecutive days outside the water, breathing directly through the air.
• The Catfish: Known in Egypt as Qarmout, this fish can survive on land as long as its skin remains moist.

Marine mammals — a unique case

Whales and dolphins are not fish, but marine mammals that breathe air through lungs. They have a special opening on top of the head called a blowhole, which closes tightly while diving and opens when they reach the surface to inhale air. Whales can store large amounts of oxygen in their bodies, allowing them to stay submerged for up to 60 minutes, while dolphins can usually hold their breath for 8–10 minutes.

Now you understand how marine life breathe underwater

Respiration in marine life is one of the most remarkable examples of biological adaptation. While fish use gills to extract oxygen from water, marine mammals rely on lungs to breathe air, illustrating the extraordinary diversity and intelligence of life beneath the waves. Understanding these mechanisms deepens our appreciation of marine biology and contributes to global conservation efforts aimed at protecting the delicate balance of ocean ecosystems. If you’re inspired to explore this hidden world yourself, Hurghada Today offers unforgettable sea trips where you can witness the beauty of marine life up close.