Endangered and Protected Species
Hawaiian monk seals and cetaceans (dolphins & whales) are all federally protected under the Endangered Species Act or Marine Mammal Protection Act. Approaching, touching, or otherwise harassing these precious creatures is not acceptable, illegal, and can result in a fine. Members and guests of WSC are expected to follow all federal, state, and local laws when encountering any ocean wildlife. We are very fortunate to sometimes cross paths with these sometimes curious creatures, but we must ensure we do not approach the animals if we encounter them. We are guests in their ocean.
The presence of magnificent sea creatures in Hawaiian waters is not only a testament to the beauty and richness of the ocean, but also a reminder of the importance of conservation efforts. Protecting their habitats, educating communities, and promoting sustainable practices are crucial for ensuring the survival and well-being of these precious marine creatures for generations to come.
Hawaiian Spinner Dolphins, Nai’a
Hawai’i’s spinner dolphins Stenella longirostris, nai’a, are protected under both federal and state law. Spinner dolphins are nocturnal feeders that perform critical resting behaviors during the day while in safe, nearshore areas. This means, when you see the dolphins while swimming in shore, they are resting. Any type of harrassment, including following, impacts their ability to rest.
Federal law prohibits swimming with, approaching, or remaining within 50 yards of spinner dolphins.
Photo taken with zoom, swimmers did not follow the dolphins.
Sea Turtles, Honu
In the beautiful waters of Hawaii, there are not just one, but two protected species of turtles known as “honu”. These enchanting creatures, the Hawaiian green sea turtle and the critically endangered Hawksbill, grace the shores and coral reefs of the Hawaiian Islands with their presence.
The Hawaiian green sea turtle, also known as Honu, is a beloved symbol of the islands. With their stunning emerald shells, these gentle giants are a sight to behold as they gracefully swim through the turquoise waters. These fascinating creatures have a special place in Hawaiian culture and are deeply respected and protected.
Sadly, the Hawksbill turtle, another species inhabiting Hawaiian waters, is critically endangered. With their unique overlapping scales on their shells and a beak-like mouth, these turtles are truly remarkable. Efforts are being made to conserve and protect these majestic creatures, as they play a vital role in maintaining the health and balance of the ocean’s delicate ecosystems.
While the Hawaiian green sea turtle and the Hawksbill turtle are the main inhabitants of Hawaiian waters, it is not unheard of to spot a few other species from time to time. Occasionally, the loggerhead, leatherback, and olive ridley sea turtles may make their way to Hawaii, although it is quite rare. These incredible creatures, each with their own distinctive features and behaviors, bring a sense of awe and wonder to those lucky enough to witness them in their natural habitat.
Sharks, manō
When we enter the vast expanse of the ocean, we find ourselves stepping into the magnificent and awe-inspiring domain of sharks. These fascinating creatures, are keystone species and play a crucial role in maintaining the delicate balance of marine ecosystems. While it is true that some shark species can pose potential risks, it is important to note that they generally have no interest in interacting with humans. Nonetheless, it is advisable to take necessary safety precautions when immersing oneself in their habitat.
In the enchanting waters surrounding the beautiful islands of Hawai’i, several species of sharks can be encountered including:
- Whitetip Reef Shark (Triaenodon obesus): One of the most commonly observed sharks in Hawai’i, the whitetip reef shark is often found patrolling the vibrant shallow waters surrounding coral reefs. Its unique feature is the distinctive white tip adorning its dorsal fin, adding a captivating touch to its appearance.
- Galapagos Shark (Carcharhinus galapagensis): In the deeper waters around the Hawaiian Islands, one may come across the elegant Galapagos shark. Sporting a slender and elongated body, this species commands attention through its graceful presence, seamlessly blending into its aquatic surroundings.
- Tiger Shark (Galeocerdo cuvier): The tiger shark, a formidable and iconic predator, is a familiar sight in the waters of Hawaii. Known for its impressive size and striking patterns of dark vertical stripes, this magnificent creature stands out among its oceanic counterparts.
- Hammerhead Shark (Sphyrna spp.): Hawaii is also home to several species of hammerhead sharks, including the scalloped hammerhead and the great hammerhead. These unique creatures are instantly recognizable due to their unusual head shape, which resembles a hammer. Witnessing the distinct silhouette of a hammerhead shark gracefully gliding through the ocean is an unforgettable experience.
- Gray Reef Shark (Carcharhinus amblyrhynchos): Found primarily near coral reefs, the gray reef shark boasts a mesmerizing gray coloration that allows it to blend effortlessly into the underwater landscape. Their sleek and streamlined bodies enable them to navigate the surrounding waters with remarkable agility.
Exploring the diverse array of shark species that inhabit the Hawaiian waters provides an incredible opportunity to appreciate the wonders of the natural world. These amazing creatures continue to inspire a sense of fascination and respect, reminding us of the importance of preserving our oceans and their precious inhabitants.
Safety
Most sharks WSC members encounter are reef sharks. However, swimmers have encountered the occasional tiger shark, although very rare. This underscores the importance of swimming in groups. Swimmers should also avoid murky waters, open river/stream outfalls, and the ocean after a major rainfall. Pay attention to lifeguard signs, which are posted if aggressive sharks have been recently spotted in the area. In October, female tiger sharks from the northwestern Hawaiian Islands migrate to the main Hawaiian Islands to breed and pup. October, or sharktober, is known to be an active shark month.
Fish
You will encounter fish when swimming in our waters – almost guaranteed!
Common fish spotted in coastal waters include (Hawaiian and scientific names used below):
Lau’ipala and manini, (Yellow and convict tang), kihikhi (Moorish idol), Humuhumunukunukuapua’a (Hawaiian triggerfish), āhole (flagtails), Uhu (Parrotfish), ‘ulua (Jacks, Carangidae), Surgeonfish, Nūnū (trumpetfish), Squirrelfishes and Soldierfishes, Butterflyfish, Goatfish, Lizardfish, Wrasse, Damselfish, and Unicornfish… just to name a few!
Corals
Hawai’i’s corals mostly belong to the “hard or coral” order, Scleractinia. These corals can be found in a stunning array of colors, ranging from vibrant yellows to majestic purples, and even deep shades of brown. It is truly a mesmerizing sight to witness the vibrant and diverse coral colonies that thrive in the warm waters of Hawai’i and the Pacific.
Unfortunately, like many coral ecosystems around the world, the corals in these areas have faced significant challenges, such as bleaching and mortality. Bleaching occurs when corals become stressed due to changes in their environment, such as increasing water temperatures or pollution. This stress causes the corals to expel the symbiotic algae living within their tissues, which leads to the loss of their vibrant colors and can ultimately result in their death.
However, there is hope for these fascinating ecosystems. Despite the challenges they face, corals have shown a remarkable ability to recover and regenerate. Given the proper conditions and time, coral reefs can bounce back, allowing their vibrant colors and essential role in the marine ecosystem to be restored.
It is crucial for us to play our part in preserving and protecting these delicate underwater wonders. One simple, but vitally important action we can take is to avoid walking on or touching any corals, even if they appear lifeless. Corals are sensitive organisms, and any unnecessary disturbance can disrupt their delicate balance and impede their recovery.
Additionally, we must be mindful of the products we use when enjoying the waters around coral reefs. Wearing reef-safe sunscreen or choosing alternative sun protection methods is key to safeguarding the reef ecosystem. When selecting sunscreen, be sure to check the ingredients list. Look for sunscreens that contain non-nano zinc oxide, as this ingredient provides effective protection without harming the coral reefs. Avoid any sunscreen products that contain oxybenzone or other harmful chemicals that have been shown to be detrimental to coral health.
By being responsible and conscious of our actions, we can contribute to the conservation and preservation of these beautiful coral ecosystems. Let us all do our part to ensure that future generations can continue to marvel at the diverse and vibrant coral colonies that call Hawai’i’s ocean and the Pacific home.
Waikīkī Swim Club 