# How tiny satellites are tracking marine wildlife | Jake Levenson | TEDxFoggyBottom

Source: https://www.youtube.com/watch?v=3mJwL1xZ2Sw
Recap page: https://rapidrecap.app/video/3mJwL1xZ2Sw
Generated: 2025-11-29T18:31:59.048+00:00

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## Quick Overview

Dr. Jake Levenson explains how using Time of Arrival (ToA) satellite tracking technology, rather than traditional GPS, allows for the tracking of marine wildlife like sea turtles with significantly lower costs and improved accuracy, enabling researchers to monitor animal movements in real-time and better understand ocean ecosystems.

**Key Points:**
- Traditional GPS tracking devices are prohibitively expensive (thousands of dollars) and have poor spatial accuracy (up to 2 kilometers off), making them impractical for tagging vast numbers of animals.
- The Time of Arrival (ToA) satellite tracking method works oppositely to GPS: the tag transmits a signal to the satellite, which then calculates the position almost instantly.
- Small satellites (CubeSats) offer advantages because they are built to open standards, are tiny (some as small as a coffee cup), and are relatively cheap to launch, enabling constellations of 18,000 satellites by 2030.
- The speaker, a marine biologist, studies Hawksbill turtles in the Caribbean island of Dominica, noting that the juvenile turtles disappear into the ocean for 10-15 years, making tracking during that time a mystery.
- The improved accuracy of ToA technology (down to a few meters) allows scientists to track animal movements in real-time, providing critical data for conservation efforts and understanding species' life cycles.
- Crowdsourcing solutions through open technology spurs innovation by lowering barriers to entry, leading to better tracking methods for public safety and scientific research.

![Screenshot at 00:05: The title slide for the TEDx event, 'TEDxFoggyBottom,' featuring stylized graphics and the phrase 'Please Do Disturb,' setting an unconventional tone for the presentation.](https://ss.rapidrecap.app/screens/3mJwL1xZ2Sw/00-00-05.png)

**Context:** Dr. Jake Levenson, a marine biologist working in the Caribbean, presents at TEDxFoggyBottom about the challenges of tracking marine wildlife, specifically Hawksbill turtles that disappear for over a decade after hatching. He contrasts traditional GPS tracking limitations—high cost and poor accuracy—with the potential of new, cost-effective small satellite technology utilizing Time of Arrival (ToA) calculations to solve the 'coverage' and 'accuracy' problems in ocean monitoring.

## Detailed Analysis

Dr. Jake Levenson argues that protecting the ocean, its inhabitants, and maintaining global air quality and economy requires better tracking technology for marine life. He highlights the limitations of traditional tracking methods, which are too expensive (thousands of dollars per tag) and inaccurate (up to 2 kilometers error margin), especially for long-lived species like sea turtles that vanish for over a decade. Levenson introduces Time of Arrival (ToA) satellite technology as a solution, explaining that it works in reverse of GPS: the animal-attached tag transmits a signal upward to the satellite, which calculates the location almost instantly. This new approach leverages the advantages of small satellites (CubeSats)—which are open-standard, tiny (some the size of a coffee cup), and cheap to launch—allowing for massive constellations (projected at 18,000 by 2030) that provide constant, high-accuracy coverage. This real-time data is crucial for understanding animal migration, protecting habitats, and informing conservation decisions, as demonstrated by his work tracking Hawksbill turtles in Dominica. The speaker concludes that this technology shift drastically reduces the cost and time required for location fixes, moving from minutes to near-instantaneous data acquisition.

### Ocean Protection Rationale

- Protects health, habitats, air quality, economy, and cultural legacy (e.g., Grand Canyon, Mona Lisa); Ocean is dynamic, changing hourly.

### Tracking Challenges

- Traditional tags are expensive (thousands of dollars) and inaccurate (up to 2 km error); Hawksbill turtles disappear for 10-15 years, creating 'Lost Years' mystery.

### Small Satellite Advantages

- Open standards, tiny size (like a coffee cup), cheap launch costs, enabling constellations of 18,000 by 2030.

### Time of Arrival (ToA) Technology

- Tag transmits signal up to the satellite, which computes location instantly, unlike GPS which receives signals from satellites; ToA yields near-instant location fixes.

### Implications of ToA

- Enables real-time tracking of animal movement, potentially preventing large-scale wildlife loss or ecological damage, contrasting sharply with older methods.

![Screenshot at 00:05: Introductory graphic featuring a flashing red siren and the text "PLEASE DO DISTURB".](https://ss.rapidrecap.app/screens/3mJwL1xZ2Sw/00-00-05.png)
![Screenshot at 00:10: Title slide: "Looking for Ocean Solutions? Look Up" presented by Dr. Jake Levenson.](https://ss.rapidrecap.app/screens/3mJwL1xZ2Sw/00-00-10.png)
![Screenshot at 00:17: Dr. Levenson holding up a small, gray and red tracking device, identifying it as a Fitbit for whales.](https://ss.rapidrecap.app/screens/3mJwL1xZ2Sw/00-00-17.png)
![Screenshot at 04:14: Slide listing the three Small Satellite Advantages: 01 Open, 02 Tiny, 03 Cheap, next to an image of a CubeSat.](https://ss.rapidrecap.app/screens/3mJwL1xZ2Sw/00-04-14.png)
![Screenshot at 09:16: Diagram comparing GPS \(signal down to the tag\) vs. ToA \(signal up from the tag to the satellite\) for location calculation.](https://ss.rapidrecap.app/screens/3mJwL1xZ2Sw/00-09-16.png)