Owha

Key takeaways

Owha belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Owha to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Owha from memory before moving on to harder problems.

Reference excerpt

Owha ([ɔfa], born before 2012) is a leopard seal that has been seen throughout the northern North Island of New Zealand, such as in Auckland's Waitematā Harbour, where she likes to sleep on pontoons. Being known for what the news media website Stuff has described as "highly inquisitive behaviour", Owha sometimes breaks fenders and pops inflatable dinghies. The long form of her name, He owha nā ōku tūpuna, is Māori for "treasured gift from our ancestors". The name was given to her in 2016 by local hapū Ngāti Whātua ki Ōrākei. She was last seen in 2022. Owha's presence in Waitematā Harbour has been contentious, with some people wanting her to be relocated due to her tendency to cause damage to marine equipment, and the danger she poses to children and pets. The Department of Conservation (DOC) has decided not to relocate her, due to the danger of anaesthetics towards leopard seals, and the possibility that she swims back to the harbour. DOC describes Owha as "the longest tracked leopard seal in the world." She has helped encourage the research of the presence of leopard seals in New Zealand, which led to them being reclassified from a vagrant species to a resident species in 2019.

Life Owha was first spotted off Dunedin in 2012. Since 2015, she has been moving between various places in the country, including the east coast of Northland, Waitematā Harbour in Auckland, Dunedin, the Bay of Plenty, Whangārei, Waiheke Island and other islands in the Hauraki Gulf, as well as in mangroves. According to The New Zealand Herald, Auckland's Westhaven Marina is her "favourite sun-bathing spot". She likes to sleep on pontoons, which would attract crowds of people; during the COVID-19 pandemic, authorities discouraged people from posting her location online in order to avoid breaking COVID-19 gathering rules. In 2016, local hapū Ngāti Whātua ki Ōrākei gave her the name "He owha nā ōku tūpuna", or Owha for short, meaning "treasured gift from our ancestors". Being known for what Stuff described as "highly inquisitive behaviour", Owha sometimes breaks fenders, and pops inflatable dinghies or floods them by putting her head inside. She has a body length of 3.1 m (10 ft) and a weight of 400 kg (880 lb), as well as a V-shaped scar on her left cheek and parallel scars on her right side. In 2017, she had a fishing hook get lodged in a flipper. In October 2019, she was found with a bleeding face, which was soon identified as being a gunshot wound. She recovered. In order to find the suspect, a $5000 reward was offered by the conservation group Sea Shepherd, but the perpetrator was never found. In April 2022, the Department of Conservation (DOC), Auckland Zoo and LeopardSeals.org worked together to cut free fishing hooks, a fishing line and sinkers from outside her mouth by using a long pole with scissors on the end. But they were unable to remove the internal hook, as it would require that Owha be captured and anaesthetised, which the team considered too high-risk for Owha. Instead, they hoped the hook would rust away and the fishing line would be removed via defecation. Because leopard seals may defend themselves when they perceive a threat, DOC has placed several signs around several Auckland marinas that are often occupied by Owha, which explain how to stay safe near her. It is encouraged that people keep a distance of at least 20 metres (66 ft), and to keep children and dogs away from her. Owha has not been seen since May 2022.

Calls for removal Several people have suggested that Owha be relocated from Waitematā Harbour. One reason for this is the danger posed by leopard seals to children or pets. Another is her tendency to cause damage to marine equipment, as damage caused by her has totalled several thousand dollars. The Department of Conservation has said that relocating Owha is not an option, as the tranquilisers needed for it could kill her, due to a dive reflex seals have which stops them from breathing. Another problem is that due to the fact that leopard seals often travel long distances, it is possible that if Owha were to be relocated, she may just make her way back to the harbour. In 2019, DOC started trialling harmless ways to get rid of Owha from Westhaven Marina, starting by using light and then moving to sound and hose water as a last resort. A few months later, Empire Capital Limited—the owner of Bayswater, Pine Harbour and Hobsonville marinas—applied for rights to use those methods to remove her from their properties. LeopardSeals.org spokesperson Krista Hupman encourages the co-existence with Owha and, by extension, leopard seals. She suggests giving them toys to play with, to distract them from causing damage to marine equipment.

Research According to DOC, Owha is "the longest tracked leopard seal in the world". In order to track her movements, and the movements of other leopard seals, DOC helped modify a phone app used to report Hector's dolphin sightings so that it can accept reports of other marine species. Owha encouraged Krista Hupman to research the presence of leopard seals in New Zealand. She and LeopardSeals.org (which she co-founded) gathered over 3,000 sightings records from newspapers, museums, a new hotline, and Māori middens, as well as three records of births on the mainland. Following this, DOC reclassified leopard seals from a vagrant species in New Zealand to resident species in 2019.

See also Mum (sea lion), who spent time in Otago List of individual seals and sea lions

References

External links 'Owha' the leopard seal moves to Hobsonville Pt on YouTube Leopard seal wreaking havoc for boaties in Auckland's Westhaven Marina on YouTube

Illustrations

Worked examples

Example 1 — a first encounter with Owha

Start with the simplest possible case. Write down what Owha claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Owha before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Owha ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Owha

In research: Owha appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Owha in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Owha is common in secondary-school and first-year university syllabi. It links to neighbouring topics Individual seals and sea lions in New Zealand, Missing or escaped animals, Waitematā Harbour, so understanding it makes those chapters shorter.
In everyday life: Look for Owha outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Owha in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Owha means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Owha out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Owha in simple terms?

Owha ([ɔfa], born before 2012) is a leopard seal that has been seen throughout the northern North Island of New Zealand, such as in Auckland's Waitematā Harbour, where she likes to sleep on pontoons. Being known for what the news media website Stuff has described as "highly inquisitive behaviour"…

Why does Owha matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Owha?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Owha.