Friday, July 31, 2009

Mahi-mahi

[Originally posted to the Moorea Coral Reef LTER (MCR LTER) Marine Life Encyclopedia]

Mahi-mahi, Dorado or Dolphin-fish - Mahimahi
(Coryphaena hippurus)

Mahi-mahi, Dorado or Dolphin-fish - Coryphaena hippurus
Photo by Gerick Bergsma

The Spanish name "dorado" means golden, referring to the spectacular gold color seen by fishermen when they first catch these popular sports fish.  In fact, Mahi-mahi change colors through a spectrum of silvers, blues, greens and golds, and may use their changing colors to communicate with other fish.

Distribution
Found in tropical and subtropical oceans worldwide

Habitat
Mahi-mahi are found out in the open ocean.

Diet
Feed on fish and squid

Quick Fact
Mahi-mahi (literally "strong-strong" in Hawaiian, meaning very strong) are tremendous swimmers, and are able to reach speeds of 65 kilometers per hour (~40 miles per hour).

Learn More
- Animal Diversity Web

- Moorea Biocode Database

Gray Reef Shark

[Originally posted to the Moorea Coral Reef LTER (MCR LTER) Marine Life Encyclopedia]

Gray Reef Shark
(Carcharhinus amblyrhynchos)

Gray Reef Shark - Carcharhinus amblyrhynchos
Photo by Gerick Bergsma and Shannon Harrer

Gray reef sharks, like other sharks in its family, are viviparous, meaning that they develop their young internally, and give birth to fully developed young.

Distribution
Throughout the Indopacific, from East Africa to Easter Island

Habitat
Gray Reef Sharks are found on reef slopes and in channels.

Diet
Fish, squid and crustaceans

Quick Fact
Gray reef sharks form home ranges on the reef, and will gather in groups near the forereef during the day.  Although social with other gray reef sharks, they will drive off other species, and perform a threat display by arching their back and swimming in an exaggerated fashion to indicate aggression.

Learn More
- Animal Diversity Web

- Moorea Biocode Database

 

Dogtooth Tuna

[Originally posted to the Moorea Coral Reef LTER (MCR LTER) Marine Life Encyclopedia]

 Dogtooth Tuna - Vau
(Gymnosarda unicolor)

Dogtooth Tuna - Gymnosarda unicolor
Photo by Gerick Bergsma

Distribution
Dogtooth Tuna are found throughout the Indopacific.

Habitat
Reef slopes and offshore reefs

Diet
Feed on many kinds of small fish

Quick Fact
Dogtooth Tuna typically cruise the forereef alone or in small groups looking for schools of small fish to eat. Dogtooth are not true tuna, but belong to a closely related group that includes the Bonito.

Learn More
- Animal Diversity Web

- Moorea Biocode Database

Chevron Barracuda

[Originally posted to the Moorea Coral Reef LTER (MCR LTER) Marine Life Encyclopedia]

Blacktail or Chevron Barracuda - Tateratera
(Sphyraena qenie)

Blacktail or Chevron Barracuda - Sphyraena qenie
Photo by Gerick Bergsma


Distribution
Occur throughout the tropical Indopacific.

Habitat
Blacktail barracuda are found in current swept lagoons, channels and reef slopes.

Diet
Feed on many kinds of small fish.

Quick Fact
Blacktail barracuda are often found in large stationary schools near the forereef during the day and disperse to feed on the reef at night. Barracuda feed largely on reef fish, and are known to accumulate toxins that lead to Ciguatera poisoning if consumed by humans.

Learn More
- Moorea Biocode Database

Tuesday, July 14, 2009

Sydney, Australia Skyline

[Originally posted to the Marine Photobank]

Sydney, NSW, skyline viewed from Sydney harbour.


Description:
Sydney is Australia's largest city and a major port along Australia's east coast.

Exposure Date:
1/10/2009

Gallery:
Coastal Development

City/Region:
Sydney

State/Province:
New South Wales

Country:
Australia


Download:
http://www.marinephotobank.org/secure/gallery-photo.php?photo_id=6924

Copyright Statement :
Image may be used for non-commercial and media purposes only. Credit should state, "Gerick Bergsma 2009/Marine Photobank."