You can't see me

It can almost certainly tell different species apart based on the shape of those air bladders. And it can tell if a fish has something weird inside it, like a metal hook. In Hawaii, false killer whales often pluck tuna off fishing lines, and “they’ll know where the hook is inside that fish,” Aude Pacini, who studies these animals, tells me. “They can ‘see’ things that you and I would never consider unless we had an X-ray machine or an MRI scanner.”

This penetrating perception is so unusual that scientists have barely begun to consider its implications. The beaked whales, for example, are odontocetes that look dolphin-esque on the outside—but on the inside, their skulls bear a strange assortment of crests, ridges, and bumps, many of which are only found in males.

Pavel Gol’din has suggested that these structures might be the equivalent of deer antlers—showy ornaments that are used to attract mates. Such ornaments would normally protrude from the body in a visible and conspicuous way, but that’s unnecessary for animals that are living medical scanners.’

I'm not sure if I ever shared this story before here, but in Curacao, when I was allowed to assist in a guest interaction programme, there was suddenly consternation in the pool behind us. A guest had entered the water and the dolphins were going crazy, paying no heed to the trainers anymore. The lead trainer that was with me gave the dolphins to me to watch over while she went to help. When she came back she told me what had happened. The guest that had caused so much uproar had left the water again and was asked if he had done anything to upset the dolphins. He hadn't, and he couldn't imagine what was wrong... until he mentioned he had a pacemaker. The younger dolphins in the pool had never seen someone with a pacemaker before and apparently it rocked their world.

I really just have to summarize Thomas's entire life:

He was in a committed relationship with a male swan named Henry for 18-24 years before a female swan named Henrietta showed up and mated with Henry.

Thomas was initially jealous of the pair and attacked them, breaking 2 of the 5 eggs Henrietta had laid. However, once the remaining eggs hatched, Thomas warmed up to them and helped raise them.

Henry couldn't fly because of an injured wing, so Thomas taught the cygnets how to fly.

When they needed to reduce the goose population in the pond where Thomas and the swans lived, they dyed Thomas's feathers red so he wouldn't be separated from Henry.

Henry, Henrietta, and Thomas remained in their happy throuple for years and raised 68 cygnets before Henry died in 2009. After Henry's death, Henrietta found another swan and flew away, leaving Thomas alone.

Thomas finally met and mated with a female goose in 2011 and had his own babies. However, another goose named George stole them and raised them himself.

As Thomas grew elderly and blind, he was relocated to a wildlife center where he raised orphaned cygnets.

His caretaker at the center described him as "pretty high maintenance."

Thomas died in 2018 at the age of around 40. He had a funeral that included a small coffin and a procession that was led by a bagpiper. He was buried under the stone where Henry was buried, the two finally reunited in death.