Source: TG
Subject: Species in News
Context: A young humpback whale, nicknamed Timmy, has captured international attention after becoming stranded for a third time in the shallow Baltic waters off Germany’s coast.
About Humpback Whale:
What it is?
- The humpback whale (Megaptera novaeangliae) is a species of baleen whale and one of the largest animals on Earth. It belongs to the rorqual family, a group that includes the blue whale and the fin whale. They are renowned for their complex songs and their tendency to perform spectacular aerial leaps (breaching).
Habitat
- Global Distribution: Found in all major oceans, from the edge of the ice packs to tropical islands.
- Migration: They have one of the longest migrations of any mammal, traveling up to 16,000 miles annually between high-latitude feeding grounds (cold waters) and tropical breeding grounds (warm waters).
- Non-Native Areas: They are not native to the Baltic Sea, as the low salinity and lack of specific prey make it difficult for them to survive long-term.
Key Characteristics
- Unique Appearance: They have a distinctive body shape with long pectoral fins (up to one-third of their body length) and a knobby head covered in tubercles (hair follicles).
- Size and Weight: Adults typically range from 13–17 meters (43–56 ft) in length and can weigh up to 40 metric tons.
- Feeding Method: They are filter feeders that use baleen plates to trap small crustaceans (krill) and fish. They often use a unique bubble-net feeding technique to corral prey.
- Tail Flukes: The underside of a humpback’s tail (fluke) has a pattern of white and black pigment that is as unique as a human fingerprint, allowing researchers to identify individual whales.
- Acoustic Behavior: Male humpbacks produce long, complex songs that can last up to 20 minutes and be heard for miles underwater; these songs evolve over time.
Significance:
- They play a vital role in ocean health by circulating nutrients through the water column and providing a massive carbon sink when they die and sink to the ocean floor.
- Their health and migratory patterns serve as critical indicators of climate change and ocean noise pollution levels.
