Sea Creature Encounters: Dolphins, Whales and Crabs, Their Folklore, the Biology Behind the Behaviour, and What They Can Mean

The dolphin is hunting, travelling with its group, or riding the pressure wave of your boat to save energy. Greek tradition made it a rescuer and a sacred animal, Maori tradition a guide and kin, and modern culture a symbol of joy. It did not come to find you. If the encounter stopped you, ask what you were thinking about when it did.

They ride the bow wave, where the pressure pushes them forward for free, in the way a surfer rides a swell. Dolphins did this beside large whales long before boats existed. It appears to be enjoyable as well as efficient, and pods often take turns. It is not an escort, a warning or a greeting, and slowing down or turning toward them ends it.

There are a few reported cases of dolphins circling swimmers near sharks, and many more of dolphins ignoring people entirely. Dolphins and sharks share the same water every day without incident. The old version of this article presented protection as a known trait; it is an anecdote, and no one should rely on it.

There is no reliable evidence that it treats depression, autism, anxiety or anything else; the studies that claimed benefits were small and poorly controlled. Swim-with programmes keep dolphins in tanks or disturb wild pods that need rest. A boat trip at a respectful distance gives the awe without the harm.

A breach probably serves several purposes: signalling to other whales across distance, since the splash carries further than a call in rough seas, dislodging parasites and loose skin, and display during courtship. Humpbacks and right whales breach most. It is not directed at you, though it is one of the great sights of the natural world.

In Maori tradition the ancestor Paikea arrived in Aotearoa on a whale’s back, and whales appear as guardians and as relatives; a stranded whale is still treated by some tribes as kin. Other Pacific peoples have their own whale ancestors and guardians. These are living traditions, and the outline here is a description, not an instruction for anyone else to follow.

Among several nations, including the Haida, Tlingit and Kwakwaka’wakw, the orca is a crest belonging to particular lineages, with stories of a people beneath the sea. Those stories and designs are the property of those families, which is why this guide describes them only in outline and why copying crest art is not a fair way to honour an encounter.

Protection and sideways movement, from its shell and its walk, and renewal, from its moult. In Greek myth a crab was sent against Heracles and became the constellation Cancer. Biologically the crab grows only by splitting its shell and backing out soft, then hiding until the new one hardens, which is the origin of the shedding-a-life image.

Most whole crab shells on a beach are moults, not dead crabs: the animal split the old shell, climbed out and left it intact. Look for a slit along the back edge. A moult means a crab is growing nearby. It is a harmless and rather good thing to find, and a fair emblem for anyone in the middle of a change.

In United States waters, keep at least 100 yards from whales and 50 yards from dolphins and seals, never approach head-on, and never feed them; feeding and harassment are illegal under the Marine Mammal Protection Act. In Hawaii it is illegal to approach spinner dolphins within 50 yards. Other countries have similar rules. A slow, parallel boat gets the longest look.

No, in United States waters, and feeding is discouraged almost everywhere. Fed dolphins learn to beg from boats, lose their fear of propellers and fishing gear, and die younger; calves that are fed never learn to hunt properly. If a dolphin approaches your boat, enjoy it, keep your hands in, and let it leave.

Do not push it back into the water, pour water into its blowhole, or crowd it. Keep people and dogs back, note the location and the animal’s condition, and call the local marine mammal stranding network or coastguard. Trained responders can assess it; well-meaning refloating usually injures the animal and sometimes the helpers.

Because people go to the coast after hard news, whale seasons are predictable, and memory keeps the encounter that fitted while forgetting the ordinary trips. Psychologists call the habit confirmation bias. The feeling of the encounter is still real: awe changes how people feel for hours. Take the awe; leave the idea that the animal knew.

Many grieving people feel so, and the comfort is real. The whale was on its migration route on the days you were not there. If an encounter helps you remember someone, keep it as a ritual you chose, such as an annual trip to the same headland, rather than a signal you must wait for; that way it stays a comfort.

Seals are curious and rest on rocks to warm up and digest; a seal that watches you is deciding whether you are a threat. Scottish and Irish stories made them selkies, who shed their skins to walk on land, and the sadness in those tales comes from the animal’s almost-human eyes. Keep dogs leashed and stay well back from pups.

A sea turtle at the surface is breathing; one on a beach is nesting where it hatched decades earlier, or has just emerged. Several traditions place the world on a turtle’s back and East Asia makes the turtle long life. Give nesting turtles darkness and distance, and report injured ones; every species is threatened.

It said dolphins carry souls between worlds, protect people from sharks, and that swimming with them has been shown to help people with health challenges. The first is a myth presented as fact, the second an anecdote, and the third has no reliable evidence and harms the animals. The awe of an encounter needs none of those claims to be worth having.

A reset. Being close to something large and alive that is not interested in you produces awe, and awe reliably makes people feel smaller, calmer and more generous for hours afterwards. If you want to carry a meaning away, choose one on purpose: the crab’s moult for a change you are in, the pod for the people you rely on. Then do one small thing.