Yes, dolphins do have nipples, but they are not external like those of humans.
Understanding Dolphin Nipples
Dolphin nipples are quite unique compared to those of land mammals. Here's a detailed explanation:
- Internal Nipples: Unlike humans and many other mammals, dolphins do not have visible external nipples. Instead, their nipples are enclosed within mammary slits. This means they are hidden within folds of skin.
- Mammary Slits: These slits are located on the dolphin's underside, near the abdomen. The nipples remain retracted and protected within these slits most of the time.
- Nipple Exposure: The nipple is exposed when the calf nudges the area. This stimulation causes the nipple to protrude from the mammary slit, making it accessible for feeding.
- Calf Feeding Position: The calf will then position itself so that the nipple is directly at the gape of its jaw, enabling it to suckle and receive milk.
Dolphin Nipples vs. Human Nipples: A Comparison
| Feature | Dolphins | Humans |
|---|---|---|
| Location | Enclosed in mammary slits | External |
| Visibility | Not usually visible | Usually visible |
| Mechanism | Exposed through calf nudging | Always external |
Key Takeaways
- Hidden: Dolphin nipples are not typically visible externally.
- Functional: They are functional for nursing and milk production.
- Unique: The structure is adapted to an aquatic environment.
