Final answer:
Marine mammals like dolphins and whales have adapted to live in the ocean, with dolphins being carnivores and whales varying from carnivorous to omnivorous. Their populations are often in decline due to human activities, necessitating conservation efforts. The correct option is (C) whether their populations are in
decline.
Step-by-step explanation:
Two types of marine mammals are dolphins and whales. These animals are part of the mammalian group and have adapted from land-dwelling creatures to living in the ocean. Key characteristics of mammals include the presence of hair or fur, sweat glands, and mammary glands, though these may not be as prominent in marine mammals like dolphins and whales.
Feeding Habits
As for what they eat, dolphins are typically carnivorous, feeding on fish and squid. Whales can be either carnivorous or omnivorous, with some species like the Blue Whale feeding almost exclusively on tiny crustaceans called krill, while others like the Orca (killer whale) feed on a variety of fish, seals, and even other whales.
Population Decline
There is growing concern about the populations of some marine mammals. Many species are in decline due to various factors including overfishing, habitat destruction, pollution, and climate change. It is important for conservation efforts to address these issues to prevent further decline and possible extinction of these remarkable marine species. The correct option is (C) whether their populations are in
decline.