NASA technology helps save the world's largest shark
Thousands of "citizen scientists" around the world are helping to save endangered whale sharks by taking photos of them for an online photo identification library. Co-founded by marine biologist Brad Norman, The Wildbook for Whale Sharks uses NASA technology to identify individual sharks by the patterns on their skin, providing critical information about their population hotspots and migration routes.
03:47 - Source: CNN
Call to Earth 147 videos
Members of the public, scientists and whale shark tour operators have contributed over 70,000 images of whale sharks to the Wildbook for Whale Sharks, an online photo identification system designed to track the animals using the patterns on their skin.
NASA technology helps save the world's largest shark
03:47
Now playing
- Source: CNN
Ealing beavers swimming
Wild beavers return to London's wetlands for the first time in 400 years
03:37
Now playing
- Source: CNN
Lawrence Hylton video card 2
Photographer captures images of Hong Kong's thriving nocturnal wildife
03:41
Now playing
- Source: CNN
baboon vid card 2
South Africans are learning to live with 'urban' baboons
03:55
Now playing
- Source: CNN
avian malaria card
An outbreak of malaria is endangering birds in the sub-antarctic
03:49
Now playing
- Source: CNN
06 Akikiki card
Saving the Hawaiian 'akikiki
03:38
Now playing
- Source: CNN
seaweed card 1
The seaweed solution
03:21
Now playing
- Source: CNN
Undo rock card
Why farmers are sprinkling volcanic dust in their fields
03:08
Now playing
- Source: CNN
Cotton-top tamarin card
Preserving a rare and elusive creature
04:14
Now playing
- Source: CNN
Golf ohio card 2
Rewilding a golf course
03:53
Now playing
- Source: CNN
18 Neretva
Scientists are fighting to preserve this Balkan river
03:59
Now playing
- Source: CNN
Mongolia dog card
How puppies can save Mongolia's grasslands
04:02
Now playing
- Source: CNN
Wildlife Conservation Society thumbnail
Conservation leader urges people to reconnect with nature
03:32
Now playing
- Source: CNN
living Seawalls card
How 'Living Seawalls' can help coastal communities
03:07
Now playing
- Source: CNN
Bermuda snails thumbnail
Endangered snails bred in captivity are released into the wild
03:59
Now playing
- Source: CNN
yellow crested cockatoo hong kong hnk spc intl_00011905.png
'A symbol of hope': the endangered cockatoos thriving 2,000 miles from home
03:57
Now playing
- Source: CNN
Bubbl card
Bursting the bubble on climate change
03:58
Now playing
- Source: CNN
Mauritius card
Restoring a tropical island paradise
03:01
Now playing
- Source: CNN
oceanways miami
Submarine that sucks plastic from the ocean tested in the US
03:22
Now playing
- Source: CNN
cte kris tompkins video
Why Kristine Tompkins is a rewilding pioneer
04:03
Now playing
- Source: CNN
CTE caterpillar video card
Why Mexico City needs more bugs
03:46
Now playing
- Source: CNN
indigenous sustainability rainforest card
Protecting the land of the spirit bear
04:07
Now playing
- Source: CNN
call to earth africa gray parrot endangered species spc_00004107.png
Saving one of the world's most trafficked birds
03:30
Now playing
- Source: CNN
Paul Nicklen and Cristina Mittermeier card video
These photographers are working to protect the oceans
03:48
Now playing
- Source: CNN
Mauritius fruit bat card
Conservationists want humans and flying foxes to coexist
03:59
Now playing
- Source: CNN
Kitasu Bay
This indigenous community created a marine refuge in Canada
03:18
Now playing
- Source: CNN
whal thumbnail
The conservationists guarding whales from ship strikes
02:51
Now playing
- Source: CNN
Chester Zoo rare species baby boom c2e spc intl_00015828.png
The UK zoo in the midst of a baby boom of rare species
03:51
Now playing
- Source: CNN
African penguin video card image
Conservationists are building ceramic nests to help endangered penguins
03:56
Now playing
- Source: CNN
Green school bali card
Bamboo school cultivates green warriors
03:57
Now playing
- Source: CNN
Paula Kahumbu still
Paula Kahumbu: Voice of the wild
24:09
Now playing
- Source: CNN
Sophie Green rhinos
Hyperrealistic paintings of animals promote conservation
04:09
Now playing
- Source: CNN
call to earth brazil conservation endangered forest spc_00004511.png
The award-winning conservationist fighting to save a forest
03:40
Now playing
- Source: CNN
call to earth ecotourism safari africa spc_00014408.png
Going green in one of Africa's top safari destinations
04:03
Now playing
- Source: CNN
call to earth day oceans highlights wrap 2 spc c2e intl_00002130.png
'Protect our oceans, protect our future': Young people come together for Call to Earth Day 2022
01:29
Now playing
- Source: CNN
vreni haussermann patagonia fjords c2e spc intl_00000000.png
Protecting Patagonia's precious fjords
01:58
Now playing
- Source: CNN
Ocean Cleanup Interceptor LA still
The 'Interceptor' capturing plastic trash at the source
03:23
Now playing
- Source: CNN
ganges flowers card
Cleaning up one of the world's most polluted waterways
03:50
Now playing
- Source: CNN
HK oyster reef card
Restoring Hong Kong's oyster reefs
03:14
Now playing
- Source: CNN
Sylvia Earle card
Sylvia Earle: Diving for hope
24:00
Now playing
- Source: CNN
Shalise Leesfield 1
The Australian teenager making the ocean safer for sharks
03:22
Now playing
- Source: CNN
cte saving california's kelp forests video_00042927.png
Innovative ideas to preserve California's underwater forests
03:56
Now playing
- Source: CNN
gina moseley cave geology c2e spc intl_00003308.png
How the world's northernmost caves could hold answers to climate change
04:08
Now playing
- Source: CNN
Genesis Butler
The 15-year-old activist on a mission to help the planet
04:00
Now playing
- Source: CNN
namibia desert elephant video card
How Namibia's elephants have adapted to life in the desert
04:01
Now playing
- Source: CNN
south africa plastic pollution litterboom project c2e spc intl_00004612.png
South Africa is battling plastic pollution in its rivers
04:06
Now playing
- Source: CNN
Listening to our planet
Listening to our planet
22:57
Now playing
- Source: CNN
Card image elephant acoustics
Sound could help to avert human-elephant conflict in India
03:15
Now playing
- Source: CNN
black cocktaoo card
Why sound can be vital in understanding elusive species
04:09
Now playing
- Source: CNN
Michel Andre profile shot
This man has made it his mission to listen to the Earth
04:20
Now playing
- Source: CNN
call to earth day 2022 explainer spc intl_00000000.png
What is Call to Earth Day 2022?
01:48
Now playing
- Source: CNN
bonaire card image
A tiny Caribbean island is reviving its coral reefs
04:02
Now playing
- Source: CNN
twilight zone 11.1
Scuba diving scientist shines a light on the world's deep sea reefs
04:07
Now playing
- Source: CNN
bamboo shark thumbnail
Bamboo shark breeding helps repopulate Thailand's reefs
03:34
Now playing
- Source: CNN
Maya Bay video thumbnail
How Thailand's most famous bay recovered from the brink of ecological catastrophe
04:01
Now playing
- Source: CNN
pangollin cte video card
This rescue center is helping the world's most trafficked mammal
03:46
Now playing
- Source: CNN
A veiled chameleon, Chamaeleo calyptratus, at Rolling Hills Wildlife Adventure confronts a camera lens.  
061113_s_RollingHills_zoo_06456.jpg
The photographer documenting mass extinction
03:20
Now playing
- Source: CNN
Bat expert Rodrigo Medellin
Meet Mexico's 'bat man'
03:51
Now playing
- Source: CNN
cte highways whale shark card
Protecting nature's highways
23:01
Now playing
- Source: CNN
wetland migratory bird card
Protecting birds' migration routes
03:45
Now playing
- Source: CNN
y2y video card
How animals cross one of the world's longest roads
04:07
Now playing
- Source: CNN
Buglife silver studded blue
A wildflower corridor across the UK could help save bees and butterflies
02:12
Now playing
- Source: CNN
wax palms video card 1
Protecting the world's tallest palms
03:41
Now playing
- Source: CNN
maralliance video card 1
Why fishing communities in Belize are defending sharks
03:38
Now playing
- Source: CNN
The OceanXplorer ship, part of hedge fund founder, Ray Dalio's OceanX research mission
Hedge fund titan, Ray Dalio, on taking the plunge into ocean exploration
03:40
Now playing
- Source: CNN
C2E Iceland Glaciers DV 1
Watch 3 decades of melting glaciers in one dramatic video
03:48
Now playing
- Source: CNN
03 penguins new zealand c2e
Inside New Zealand's penguin rescue and rehab center
03:43
Now playing
- Source: CNN
kehkashan basu green hope foundation video card
Foundation gives 'Green Hope' around the world
04:00
Now playing
- Source: CNN
andean condor video card 3.
Bringing back Andean condors from the brink of extinction
04:02
Now playing
- Source: CNN
jeremy shelton freshwater fish 04 video card
The untold story of South Africa's rivers
03:48
Now playing
- Source: CNN
Thai tiger video card
In Thailand, these tigers are coming back with a roar
04:04
Now playing
- Source: CNN
New Zealand sea lions
New Zealand sea lions are back, and they're reclaiming human spaces
03:36
Now playing
- Source: CNN