Welcome to the World of Rough-Toothed Dolphins!
Rough-toothed dolphins (Steno bredanensis) are unique among dolphins, known for their unusual teeth and preference for deep, offshore waters. These dolphins are less commonly seen than their coastal relatives, but they are fascinating creatures with remarkable diving abilities.
Who Are Rough-Toothed Dolphins?
Named for the ridges along their teeth, rough-toothed dolphins have a prehistoric appearance and are often found in deeper oceanic waters, away from the coast. They are known for their ability to dive to great depths in search of prey.
Physical Characteristics
- Size: Rough-toothed dolphins grow up to 8.5 feet in length and weigh between 200-350 pounds.
- Color: They have a unique dark gray body with a lighter, almost pinkish belly and a characteristic narrow, conical head.
- Teeth: Their teeth are grooved, giving them their name.
Habitat
Rough-toothed dolphins are found in deep tropical and subtropical oceans around the world. They prefer offshore environments, often far from land, and are deep divers, capable of reaching depths of over 500 feet.
Diet
Rough-toothed dolphins primarily feed on:
- Squid
- Fish
- Octopus
They use echolocation to hunt in the dark depths of the ocean, relying on their excellent diving skills to catch fast-moving prey.
Rough-Toothed Dolphin Behavior
These dolphins are highly social, typically forming small pods of 10-20 individuals, though larger groups are occasionally seen. They are known for their tight-knit groups and often travel with other dolphin species.
Communication and Social Bonds
Rough-toothed dolphins communicate through a series of clicks and whistles, and they are often observed bow-riding and surfing the waves generated by boats.
Conservation of Rough-Toothed Dolphins
While not considered endangered, rough-toothed dolphins face several threats, including:
- Pollution: Chemical pollutants accumulate in their tissues, affecting their health.
- Bycatch: They are sometimes caught unintentionally in fishing nets.
- Noise pollution: Underwater noise from ships and oil exploration can interfere with their echolocation.
Fun Facts About Rough-Toothed Dolphins
- Teeth: Their grooved teeth are unique among dolphins, setting them apart from other species.
- Lifespan: They can live up to 36 years in the wild.
- Speed: These dolphins are fast swimmers, capable of reaching speeds up to 20 mph.
