Aquatic Mammals

Leopard seals typically have around 34 teeth in total, with 12 teeth in the upper jaw and 22 teeth in the lower jaw. These teeth are sharp and interlocking, ideal for catching and eating prey like fish, squid, and other seals.

Second to the top - they are predators but I believe that a Killer Whales probably kill and eat them so they are not the top predator.

So the pyramid would go (starting at the bottom):

Plankton -> fish-> penguin -> Leopard seal -> Killer Whale

• An autotroph (self + feeding) is an organism that makes it own food using light energy or chemosynthesis. Examples are plants and algae.
• A heterotroph (different + feeding) uses organic (living) carbon for growth. Examples are animals, fungi and bacteria.
• A fish is an animal and does not make its own food, so it is a heterotroph.

Baleen is a filter-feeding system made of keratin found in certain whale species, particularly in the mouths of baleen whales. It is used to filter and trap small prey, such as krill, while allowing water to pass through.

On the outside, the fins of a whale resemble the fins of a fish, because they have evolved for the same purpose. But when you look at a whale skeleton, the fins look like arms and hands. That's because whales are not fish, they are actually mammals that have evolved from land-dwelling creatures with four legs.

A whale's tongue does not weigh 4 tons. The tongue of a whale is lighter, typically weighing around a few hundred pounds. The large size of a whale's tongue is advantageous for filter-feeding and consuming large amounts of food.

Elephant

Yes, limestone is a sedimentary rock primarily made up of calcite and aragonite minerals, which are derived from the shells of marine organisms. Over time, these shells accumulate and are compacted to form limestone rock.

Whales swim in packs, or pods, for social reasons such as cooperation in hunting, communication, and raising offspring. Swimming in groups helps them to find food more efficiently, protect each other from predators, and navigate the vast ocean.

The largest Antarctic marine mammal is the southern elephant seal (Mirounga leonina). This species of seal can weigh over 8,800 pounds and reach lengths of up to 20 feet. They are known for their large size and loud vocalizations during the breeding season.

Aquatic organisms respirate by extracting oxygen dissolved in water through their gills or body surface. The oxygen is then delivered to their cells, where it participates in cellular respiration to produce energy. Carbon dioxide, a byproduct of respiration, is released into the surrounding water.

It is a sensory organ at the tip of their lower jaw with no name yet. Whales use a technique called "lunge feeding" where they suck in tons of water and then filter their food out from the water with their baleen. The sensory organ helps them detect their prey and coordinate the critical timing of the opening and closing of their vast mouths to keep it from escaping.

High levels of DDT found in grebes can be due to bioaccumulation, where the pesticide builds up in the food chain reaching toxic levels in top predators like grebes. Grebes consume contaminated fish and aquatic insects which leads to a high concentration of DDT in their bodies. Efforts to decrease the use of DDT and monitor its presence in the environment are important to protect wildlife like grebes.

Unfortunately, you can't from the BBC because it doesn't sell market, but there might be a Nev the bear soft toy coming out for a charitiy event soon!

A marine mammal is an animal that lives in the ocean and breathes air, like whales, dolphins, seals, and manatees. These animals have adapted to life in the water and often have special characteristics to help them survive in the marine environment.

A water habitat refers to an environment where organisms live in or around water, such as lakes, rivers, ponds, and oceans. These habitats provide essential resources like food, shelter, and breeding grounds for aquatic organisms such as fish, amphibians, and various water-dwelling plants and invertebrates. Protecting water habitats is crucial for maintaining biodiversity and ecosystem balance.

Some species of whales engage in a form of mutualism with fish. For example, certain types of whales may work together with fish to capture prey by herding them into a concentrated group for easier feeding. This behavior benefits both the whales and the fish involved.

Yes they do. For example, when a female humpback whale reach her breeding grounds, she will announce her arrival by turning onto her back, and slapping the water with her huge flippers. Several males will soon come on the scene, the female will then swim away, with her suitors giving chase for hours. Each male will compete with each other, to be by the females side. These chases can get very aggressive, and humpbacks have been known to be killed fighting for the females acceptance, and the right to mate. Constantly banging into each other, using deep bellowing sounds, and masses of bubbles to intimidate, they breach out of the water, trying to submerge their rivals; Until finally the victor breaks free to be by the females side, and everything goes calm once more.

The female actively encourages this behavior, to ensure that she has secured the strongest male to breed with. Only then, will the male and the female descend into the depths, where mating will take place.

Sea creatures are classified as organisms that live in marine environments, including fish, mammals like dolphins and whales, invertebrates such as jellyfish and squids, and other aquatic organisms like sea turtles and seahorses. They play important roles in marine ecosystems and come in a wide variety of shapes, sizes, and habitats.

Dolphins rely on their speed and agility to evade predators. They may also use their ability to dive deep underwater or swim in a group to confuse predators. Additionally, dolphins have a keen sense of hearing and echolocation, helping them detect threats in their environment.

A hard-shelled sea creature that starts with the prefix "bar" is a barnacle. Barnacles are small marine crustaceans that attach themselves to hard surfaces, such as rocks or the hulls of ships, using a strong, adhesive cement.